Bios beep error messages

bios beep error messages

One long beep and two short beeps is usually an indication of a failure within the memory that's part of the video card. Replacing the video. Depending on the type of the BIOS you have the BIOS may play beeps in a specific pattern to indicate what the problem is, or play the same beep a number of. Deciphering AMI BIOS Beep Error Code · 1 Short Beep, Refresh failure in DRAM due to malfunctioning programmable interrupt timer · 2 Short Beeps, RAM IC.

Bios beep error messages - apologise, but

BIOS Beep Codes


 What is a BIOS Beep Code?When you power on a computer the BIOS immediately takes control of the computer and performs the P.O.S.T (Power On Self Test). At the end of the POST the computer will play an audible 'BEEP' through either the PC's internal speaker of through speakers attached to the sound card (if you have a built-in sound chip). If the POST completed successfully without detecting any problems with then system will play a single short beep to let you know the test is complete and the computer will continue to startup and load the operating system.

If during the POST the BIOS detects a problem it will normally display a visual error message on the monitor explaining what the problem is. However, if a problem is detected before the BIOS initializes the video card, or a video card is not present or not detected then the BIOS will play several 'BEEPS' through the speaker to let you know there is a problem. Depending on the type of the BIOS you have the BIOS may play beeps in a specific pattern to indicate what the problem is, or play the same beep a number of times indicating the problem. It is very important that you pay close attention to the number and/or pattern of the beeps your computer plays on startup.

 Below is a table of the most common AMI, Phoenix and Award BIOS beep codes. AMI (American Megatrends International) BIOS Beep Codes.AMI BIOS uses beeps of the same length and pitch. The error is displayed as a number of beeps. For example, 4 beeps indicated a timer failure.
 BEEP CODE MEANING POSSIBLE CAUSE
 1 Beep (No video) Memory refresh failure Bad memory
 2 Beeps  Memory parity error Bad memory
 3 Beeps  Base 64K mem failure Bad memory
 4 Beeps  Timer not operational Bad motherboard
 5 Beeps Processor error Bad processor
 6 Beeps   Gate A20 failure Bad CPU or Motherboard
 7 Beeps Processor exception  Bad processor
 8 Beeps Video memory error Bad video card or memory
 9 Beeps ROM checksum error Bad BIOS
10 Beeps CMOS checksum error Bad motherboard
11 Beeps Cache memory bad Bad CPU or motherboard
  Award BIOS Beep CodesAward BIOS uses beeps of varying duration. A long beep will typically last for 2 seconds while a short beep will last only 1 second. Award BIOS also uses beeps of different frequency to indicate critical errors. If an Award BIOS detects that the CPU is overheating it may play a high pitched repeating beep while the computer is running.
 BEEP CODE MEANING POSSIBLE CAUSE
 1 Long, 2 Short Video adapter failure Bad video adapter
 Repeating (Endless loop) Memory error Bad memory or bad connection
 1 Long, 3 Short Video adapter failure Bad video adapter or memory
 High freq. beeps (while running) CPU is overheating CPU fan failure
 Repeating High, Low beeps CPU failure Bad processor
 Phoenix BIOS Beep CodesPhoenix BIOS uses beep code patterns to indicate problems. In the table below the '-' indicates a brief pause between beeps.

Example: 1 - 1 - 2  would sound like BEEP <pause> BEEP <pause> BEEP BEEP

 BEEP CODE MEANING POSSIBLE CAUSE
 1 - 1 - 2  CPU / motherboard failure Bad CPU / motherboard
 1 - 1 - 3 CMOS read/write failure Bad motherboard
 1 - 1 - 4 BIOS ROM failure Bad BIOS chip
 1 - 2 - 1  Timer failure Bad motherboard
 1 - 2 - 2 DMA failure Bad motherboard
 1 - 2 - 3 DMA failure Bad motherboard
 1 - 3 - 1  Memory refresh failure Bad memory
 1 - 3 - 2 64K memory failure Bad memory
 1 - 3 - 3 64K memory failure Bad memory
 1 - 3 - 4 64K memory failure Bad memory
 1 - 4 - 1 Address line failure Bad memory
 1 - 4 - 2 Parity error Bad memory
 1 - 4 - 3 Timer failure Bad motherboard
 1 - 4 - 4 NMI port failure Bad motherboard
 2 - 1 - 1 64K memory failure Bad memory
 2 - 1 - 2 64K memory failure Bad memory
 2 - 1 - 3 64K memory failure Bad memory
 2 - 1 - 4 64K memory failure Bad memory
 2 - 2 - 1 64K memory failure Bad memory
 2 - 2 - 2 64K memory failure Bad memory
 2 - 2 - 3 64K memory failure Bad memory
 2 - 2 - 4 64K memory failure Bad memory
 2 - 3 - 1 64K memory failure Bad memory
 2 - 3 - 2 64K memory failure Bad memory
 2 - 3 - 3 64K memory failure Bad memory
 2 - 3 - 4 64K memory failure Bad memory
 2 - 4 - 1 64K memory failure Bad memory
 2 - 4 - 2 64K memory failure Bad memory
 2 - 4 - 4 64K memory failure Bad memory
 2 - 4 - 4 64K memory failure Bad memory
 3 - 1 - 1 Slave DMA failure Bad motherboard
 3 - 1 - 2 Master DMA failure Bad motherboard
 3 - 1 - 3 Interrupt controller failure Bad motherboard
 3 - 1 -4 Slave IC failure Bad motherboard
 3 - 2 -2 Interrupt Controller failure Bad motherboard
 3 - 2 - 3 <RESERVED> 
 3 - 2 - 4 Keyboard control failure Bad motherboard
 3 - 3 - 1 CMOS batter failure Bad CMOS battery
 3 - 3 - 2 CMOS configuration error Incorrect setting
 3 - 3 - 3 <RESERVED> 
 3 - 3 - 4 Video memory failure Bad video card or memory
 3 - 4 - 1 Video init failure Bad video card or memory
 4 - 2 - 1 Timer failure Bad motherboard
 4 - 2 - 2 CMOS shutdown failure Bad motherboard
 4 - 2 - 3 Gate A20 failure Bad motherboard
 4 - 2 - 4 Unexpected interrupt Bad processor
 4 - 3 - 1 RAM test failure Bad memory
 4 - 3 - 3 Timer failure Bad motherboard
 4 - 3 - 4 RTC failure Bad motherboard
 4 - 4 - 1 Serial port failure Bad motherboard
 4 - 4 - 2 Parallel port failure Bad motherboard
 4 - 4 - 3 Coprocessor failure Bad motherboard or CPU.
 9 - 2 - 1 Video adapter incompatibility Use a different brand of video card
   
*Designs, specifications and package contents are subject to change without notice. Various trademarks belong to their respective owners. Please read the legal notice.  © All rights reserved. Amptron International Inc. Rowland St., City of Industry CA., ()  

The BIOS is the “Basic Input/Output System” of a computer. It is a piece of firmware that is saved on a tiny chip in the mainboard of almost every computer. The basic function of the BIOS is to enable communication between the operating system and the hardware components. Every time the system is started up, the BIOS runs a sort of self-test. This test is called the “POST”, which stands for “Power-On Self-Test”

If an error occurs during the POST, the BIOS emits a specific signal (a beep code) via the system loudspeakers to alert the user of a specific problem. How you open the BIOS depends on your computer – different manufacturers use different methods. The BIOS update procedure also varies depending on the manufacturer. Read on to find out what the most common computer beep codes mean.

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BIOS beep codes for Award/Phoenix

1x short No errors detected during the self-test
2x short Non-specified error; more details displayed on screen
Continuous beep Memory or graphics card not detected
Repeated short beeps Insufficient power supplied to the motherboard
1x long RAM error
1x long, 1x short Motherboard error
1x long, 2x short Graphics card error
1x long, 3x short Keyboard controller failure; graphics card error (in later BIOS versions)
3x long Communication error between keyboard and motherboard
1x short Incorrect interaction between RAM and motherboard
1x long No errors detected during the self-test
Continuous beep Power supply error
1x long, 1x short Fault on motherboard
1x long, 2x short Graphics card not detected
1x long, 3x short Video memory error
2x short Parity error in the first 64 kB of memory
2x long, 2x short Video memory error
3x short, 3x long, 3x short Defective RAM; RAM must be replaced
5x short Problem with processor
6x short Cannot enter BIOS in safe mode
7x short Processor or graphics card error
8x short Display memory error in graphics card
9x short CMOS battery error
10x short Error in shutdown register of CMOS RAM
11x short Error in external cache memory
1x short No errors detected during the self-test
2x short Error during the POST; more details displayed on screen
No beep Power supply/system board/processor error; often related to power supply
Continuous beep Power supply/system board/keyboard problem
Repeated short beeps Power supply or system board problem
1x long, 1x short System board problem
1x long, 2x short Graphics card problem (Mono/CGA video error)
1x long, 3x short Graphics card problem (EGA video error)
3x long Keyboard problem

BIOS beep codes for DELL

Dell beep codes are all the same length. You need to listen for how often a beep is repeated after a short pause. This is indicated by the figures and dashes in the following table. For example, “1 – 2” means “Beep – Beep Beep”. The beep codes in the table below are used by Dell-OptiPlex systems. Other Dell systems such as Inspiron or Vostro incorporate flashing LEDs to communicate error messages.

1 – 1 – 2 Microprocessor register failure
3 – 2 – 4 Keyboard controller test failure
3 – 3 – 1 NVRAM power loss
3 – 3 – 4 Video memory test failure
3 – 4 – 1 Screen initialization failure
4 – 2 – 2 Shutdown failure
4 – 4 – 4 Cache test failure

BIOS beep codes for Macintosh

One beep, repeating every 5 seconds No RAM installed
3x short, 5-second pause, 3x short RAM did not pass data integrity check
1x long while you hold down the power button An EFI ROM update is in progress (only applicable to computers manufactured before )
3x long, 2x short, 3x long EFI ROM error or Mac is in EFI ROM recovery mode

BIOS beep codes for MR

MR systems use low and high beeps. These are shown in the table as “L” and “H” respectively.

LH-LLL BIOS failure (replacement may be required)
LH-HLL DMA page register failure (possible board fault)
LH-LHL Keyboard controller self-test failure
LH-HHL RAM seated incorrectly (e.g. after replacement)
LH-LLH Mainboard failure
LH-LLLL Memory bank 0 pattern test failure
LH-LHLLH CMOS RAM read/write test failure
LH-HHLLH Real-time clock failure
LH-LLHLH BIOS/RAM failure with graphics card, error in video card address line
LH-HLHLH Keyboard controller failure
LH-LHHLH RAM parity error
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Updating the BIOS: How does it work?

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SIRIS, ALTO, and NAS: Explaining the Boot Process, Beep Codes, and BIOS

Topic

The article explains the boot process for a Datto appliance, its associated beep codes, and the BIOS settings.

See also the article on a device's LEDs and blinking/color patterns.

Environment

  • Datto SIRIS
  • Datto ALTO
  • Datto NAS

Description

Boot Process

The boot process for every unit starts with the POST or Power On Self Test.

The POST is the process by which a motherboard will check all of its components and hardware. This includes:

  • Processor model and speed
  • RAM quantity and speed
  • Hard drive detection
  • USB initialization
  • IPMI initialization (if applicable)
  • Hardware RAID cards / LSI BIOS
  • Intel NIC BIOS

Example POST Screen

Beep Codes

One of the most important events during the POST process is the POST beep.

If a motherboard is malfunctioning and is unable to POST, it will beep certain codes which can help you identify the failure.

Some beep codes are standard, although every board is different and therefore the beeps can change between different BIOS manufacturers. Commonly used motherboards on Datto appliances include (but are not limited to), ASUS, SuperMicro and ASRock..

The following are basic beep codes for the ASUS M4A88T-M motherboard:

  • 1 short beep usually signifies that everything is OK
  • 1 long beep followed by 2 short beeps is a memory issue. Reseat the RAM and reboot.
  • 1 long beep followed by 3 short beeps is a graphics-related error. Reseat the RAM and reboot. If you get the same beep code, this could be a possible bad motherboard or processor.
  • 5 short beeps is a CPU issue.

BIOS Settings

The BIOS settings are critical to the operation of the Datto. The most important settings are:

  • Date and Time (Incorrect settings can cause unwarranted FSCK scans)
  • Hard Drives MUST be set to AHCI or Advanced Host Controller Interface (As opposed to IDE or RAID)
  • Boot order must be configured so that the OS drive is at the top of the list. If you are experiencing a blinking cursor, it is likely due to the device trying to boot from an array drive. Contact Datto Tech Support for assistance. All other bootable media should be disabled if possible
  • Virtualization must be enabled. (AKA [Secure Virtual Machine Mode], [Vt-d], [Virtualization])
  • Fans are set to FULL speed. If fan noise becomes an issue for you or your client, see the article Changing The Fan Speed On A Device.
  • On some server boards, the RAM speed must be manually set to Mhz (a non-issue for new devices)
  • UMA Shared memory is limited to 64mb, to allow for maximum simultaneous virtualizations
  • Unit is set to not halt if it detects errors (such as no keyboard or monitor connected)
  • The device is set to turn on after AC power loss

Navigating the BIOS

The BIOS is slightly different across all devices but many settings are organized in the same way.

  • The Basic tab or Front page usually has options for:
  • The Advanced tab usually has the options for:
    • ATA devices [AHCI Mode]
    • Virtualization [Secure Virtual machine Mode]
  • The Integrated peripherals menu usually has options for:
    • Disabling Floppy
    • Limiting UMA Share memory to 64mb
    • Enabling LAN PXE boot (if necessary)
  • Boot order and hard disk drives often has its own tab
  • The Security tab has the option for setting the BIOS password

To save and exit quickly, press F10.

Step-By-Step: Deciphering BIOS beep codes

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Step-By-Step: Deciphering BIOS beep codes

Discover what the beeps your computer makes at start up mean

Each time a user turns on his or her computer, the BIOS gathers information about the major system components and performs a special test called the Power On Self Test (POST) to make sure that each component is functioning correctly. If the test identifies a hardware problem, the BIOS will display an error message on the monitor. But, if the failure occurred before the BIOS could access the video card, the BIOS will issue special beep codes to alert the user to the problem.

In this article, I&#;ll take a detailed look at the beeps that are issued by various BIOS manufacturers, and I&#;ll provide you with a resource for more detailed information. Understanding these noises will allow you to troubleshoot a multitude of hardware problems.

Annoying noises, flashing lights
During a POST session, your computer has several ways to communicate: Either through flashing indicator lights, the computer&#;s speaker, or via the monitor. Since the monitor is not initialized until later in the process, early failures are communicated by red or absent status lights, such as the power and hard drive activity lights, or by sound in the form of beeps.


POST diagnostic cards

Another option is to purchase a POST diagnostic card to intercept POST errors at their source via the ISA or PCI bus. Cards are available for either bus and typically contain one or two digital readouts that present the codes, as well as LEDs for monitoring the power supply. Since POST codes are more numerous than beep codes (there may be 10 beep codes to POST codes), a diagnostic card can help you track the progress of the POST and see more detail about what caused a failure or warning.

An ISA card is preferred, as it&#;s possible that a PCI card may not report all the POST codes. Because the ISA bus is initialized first, the PCI bus only receives the codes generated after the ISA bus is initialized. In addition, ISA busses connect to the South Bridge chip, so damaged motherboards may not be able to send codes to the PCI bus at all.

You can obtain more information on POST diagnostic cards from manufacturers such as Xetal Systems Inc., makers of POSTmortem; Microsystems Development Technologies Inc.&#;s Post Code Master, or by running a Web search.


Heard any good beeps lately?
Naturally, if the speaker is damaged or disconnected, you&#;ll have no way of knowing what ails your hardware without a diagnostic card. At the conclusion of a successful POST, the computer should beep once or twice. These beeps inform you that your hardware is in good working order. If you don&#;t hear this &#;all&#;s well&#; beep, here are a few things to check:
  • Are external speakers connected? On many computers, the computer speaker is disabled when a jack is connected.
  • Is the volume too low? Use the function keys indicated by the manufacturer to increase the volume.
  • Did someone disconnect the speaker? People do this occasionally because the beeps bother them. Reconnect the leads to the motherboard jumpers.
  • Is the onboard speaker disabled in the BIOS? Re-enable the speaker in the BIOS setup program. Note: It&#;s also a good idea to include a small speaker mounted to a motherboard with some standard leads as part of your troubleshooting kit.

To create unique error messages, codes emit combinations of long and short beeps, similar to Morse code. Instead of letters, however, each unique sequence indicates a different problem with components. As you might have guessed, in contrast to a universal standard such as Morse code, each BIOS manufacturer creates its own beep sequences.

POST time
Below are audible codes for several common BIOSs that I obtained from The BIOS Companion. The Companion excels in presenting almost every BIOS setting that can be configured. It also contains tables of POST codes. It can be purchased online (as a PDF file) for $15 or printed for $, or it can be acquired as part of a larger set, called The PC Engineer&#;s Reference Book. You&#;ll want to check this out if you support many different PC types, including legacy equipment. For more information on these and other reference books, see Electrocution Technical Publishers.

American Megatrends Inc. BIOS
Standard beep codes for computers using American Megatrends Inc. (AMI) BIOSs are listed in Table A.

Table A
American Megatrends Inc. BIOS beep codes

Award BIOS
Award BIOSs only have one beep code: One long beep, followed by two short beeps, indicates that the BIOS is unable to initialize the video screen.

Compaq BIOS
Standard beep codes for Compaq computers with no text and error message are shown in Table B.

Table B
Other Compaq beeps are associated with specific text messages on the video screen.

Dell BIOS
Beep codes for Dell computers (Phoenix BIOS) are listed in Table C. (All are short beeps separated by pauses.)

Table C
To view screen messages that accompany beep codes, make sure the Phoenix QuietBoot feature is disabled by pressing [Esc] during boot. This will display POST messages.

IBM beep codes
IBM personal computers (Thinkpads and Desktops) use a Phoenix-based BIOS. An extensive amount of information can be gleaned from the beep codes of Phoenix BIOSs. Since , Phoenix has used a four-part system: four bursts of short beeps separated by pauses. For example, in Table D below, a value such as (shutdown error), means four short beeps, pause, two short beeps, pause, three short beeps, pause, one short beep. While the codes in the table below will apply in general, to be sure, always check the specification for your particular model. The beep codes for IBM computers are listed in Table D. (All are short beeps separated by pauses.)
Table D

Number of beepsDescription
Verify real mode
Get CPU type
Initialize system hardware
Initialize chipset registers with initial values
Set in POST flag
Initialize CPU registers
Initialize cache to initial values
Initialize I/O
Initialize power management
Load alternative registers with initial POST values
Jump to UserPatch0
Initialize timer initialization
timer initialization
DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test Keyboard Controller
Set ES segment register to 4GB
Autosize DRAM
Clear K base memory
Test K base address lines
Test 51K base memory
Test CPU bus-clock frequency
CMOS RAM read/write failure (This commonly indicates a problem on the ISA bus such as a card not seated.)
Reinitialize the chipset
Shadow system BIOS ROM
Reinitialize the cache
Autosize the cache
Configure advanced chipset registers
Load alternate registers with CMOS values
Set initial CPU speed
Initialize interrupt vectors
Initialize BIOS interrupts
Check ROM copyright notice
Initialize manager for PCI Options ROMs
Check video configuration against CMOS
Initialize PCI bus and devices
Initialize all video adapters in system
Shadow video BIOS ROM
BeepsError MessageDescriptionCPU test failureThe CPU is faulty.Low System board select failureThe motherboard is having an
undetermined fault.CMOS read/write errorThe real time clock/CMOS is faulty.Low Extended CMOS RAM failureThe extended portion of the CMOS
RAM has failed.BIOS ROM checksum errorThe BIOS ROM has failed.PIT failureThe programmable interrupt timer has
failed.DMA failureThe DMA controller has failed.DMA read/write failureThe DMA controller has failed.RAM refresh failureThe RAM refresh controller has failed64KB RAM failureThe test of the first 64KB RAM has
failed to startFirst 64KB RAM failureThe first RAM IC has failed.First 64KB logic failureThe first RAM control logic has failedAddress line failureThe address line to the first 64KB RAM
has failedParity RAM failureThe first RAM IC has failed.EISA fail-safe timer testMotherboard failureEISA NMI port testMotherboard failure64KB RAM failureBit 0; This data bit on the first RAM IC
has failed.64KB RAM failureBit 1; This data bit on the first RAM IC
has failed.64KB RAM failureBit 2; This data bit on the first RAM IC
has failed.64KB RAM failureBit 3; This data bit on the first RAM IC
has failed.64KB RAM failureBit 4; This data bit on the first RAM IC
has failed.64KB RAM failureBit 5; This data bit on the first RAM IC
has failed.64KB RAM failureBit 6; This data bit on the first RAM IC
has failed.64KB RAM failureBit 7; This data bit on the first RAM IC
has failed.64KB RAM failureBit 8; This data bit on the first RAM IC
has failed.64KB RAM failureBit 9; This data bit on the first RAM IC
has failed.64KB RAM failureBit 10; This data bit on the first RAM
IC has failed.64KB RAM failureBit 11; This data bit on the first RAM
IC has failed.64KB RAM failureBit 12; This data bit on the first RAM
IC has failed.64KB RAM failureBit 13; This data bit on the first RAM
IC has failed.64KB RAM failureBit 14; This data bit on the first RAM
IC has failed.64KB RAM failureBit 15; This data bit on the first RAM
IC has failed.Peripheral DMA register failureThe DMA controller has failed.Central DMA register failureThe DMA controller had failed.Central interrupt mask register failureThe interrupt controller IC has failedPeripheral interrupt mask register failureThe interrupt controller IC has failedInterrupt vector errorThe BIOS was unable to load the
interrupt vectors into memory.Reserved Keyboard controller failureThe keyboard controller has failed.CMOS RAM power badCMOS battery failureCMOS configuration errorThe CMOS configuration has failed.Reserved Video memory failureThere is a problem with the video
memory.Video initialization failureThere is a problem with the video
adapter.Timer failureThe system's timer IC has failed.Shutdown failureThe CMOS has failed.Gate A20 failureThe keyboard controller has failed.Unexpected interrupt in protected modeThis is a CPU problem.RAM test failureSystem RAM addressing circuitry is
faulty.Interval timer channel 2 failureThe system timer IC has failed.Time of day clock failureThe real time clock/CMOS has failed.Serial port failureA error has occurred in the serial port
circuitryParallel port failureA error has occurred in the parallel
port circuitryMath coprocessor failureThe math coprocessor has failed.

If your computer beeps and fails to boot

On startup, computers perform a Power-on Self Test, commonly referred to as a POST. If problems are found while booting, you can usually diagnose them using the error codes displayed on the screen. However, if nothing displays on the screen, the computer might use sounds (that is, beep codes) to tell you what is wrong. Many of these errors indicate hardware problems that a service technician should fix. However, some errors are easily fixed. For example, keyboard controller errors often mean that your keyboard isn't plugged in.

Following are beep codes for some common brands of BIOS for PCs. For information about Mac beep codes or startup tones, see Apple Support's About Mac computer startup tones.

Note:

Many BIOSes will have different beep codes even if they appear to be from the same manufacturer. This is because motherboard manufacturers reprogram codes to reflect their own customizations. You can often go to the website for the motherboard's manufacturer to find the updated codes, but you may find cases where the manufacturer simply does not document the changes.

For more about beeps and error codes, see sprers.eu's Computer POST and beep codes.


Award

Award BIOSes typically use more screen errors than beep codes.

For Award BIOSes manufactured by Phoenix Technologies, note the following from the Phoenix Technologies AwardBIOS Error Messages page:

"The only AwardBIOS beep code indicates that a video error has occurred and the BIOS cannot initialize the video screen to display any additional information. This beep code consists of a single long beep followed by two short beeps. Any other beeps are probably RAM (Random Access Memory) problems."

Award BIOSes not manufactured under Phoenix Technologies use the following beeps; this information is from the BIOS Central Award BIOS Beep Codes page:

Beeps Meaning
1 long, 2 short

Video adapter error: Bad or improperly seated video card

Repeating beeps

Memory error: Bad or improperly seated RAM

1 long, 3 short

Bad video RAM or video card not present

High-frequency beeps Overheated CPU: Check fans
Repeating high/low beeps

CPU: Improperly seated or defective CPU

AMI (American Megatrends)

The information below is from the BIOS Central AMI BIOS Beep Codes page.

Beeps Meaning
1 short DRAM refresh failure
2 short

Parity circuit failure in the first 64 KB of RAM: Likely a bad RAM IC, or possibly one of the hardware tests has failed

3 short

Memory failure in the first 64 KB of RAM: Likely a bad RAM IC

4 short

System timer failure: Bad clock IC or bad RAM in the first bank of memory

5 short

Processor failure: The CPU has failed.

6 short

Keyboard controller Gate A20 error: The keyboard controller has failed. Due to its integration into the system board, you usually must replace the motherboard.

7 short

Virtual mode exception error: CPU has generated an exception error; bad CPU or motherboard

8 short

Display memory Read/Write test failure: Bad video card

9 short

ROM BIOS checksum failure: BIOS is defective

10 short

CMOS shutdown Read/Write error

11 short

Cache Memory error: Specifically, the L2 cache is bad.

1 long, 2 short

Video system failure: Error in video card BIOS, or a horizontal retrace has failed

1 long, 3 short

Conventional/Extended memory failure: RAM is bad

1 long, 8 short

Display/Retrace test failed: Video adapter is defective or missing

AST BIOS

The following information is from the BIOS Central AST BIOS Beep Codes page.

Beeps Meaning
1 short

CPU register test failure: The CPU has failed.

2 short

Keyboard controller buffer failure: The keyboard controller has failed.

3 short

Keyboard controller reset failure: The keyboard controller has failed or the motherboard circuitry is faulty.

4 short

Keyboard communication failure: Bad keyboard controller or keyboard

5 short

Keyboard input failure: The keyboard controller IC has failed.

6 short

System board chipset failure: The chipset on the motherboard has failed. Replace the motherboard.

9 short

BIOS ROM checksum error: The BIOS ROM has failed. If possible, replace the BIOS on the motherboard.

10 short

System timer test failure: The system clock IC has failed.

11 short

ASIC failure: Motherboard circuitry has failed. Replace the motherboard.

12 short

CMOS RAM shutdown register failure: The real-time clock/CMOS IC failed. Replace the CMOS or motherboard.

1 long

DMA controller 0 failure: The DMA controller IC for channel 0 has failed. If possible, replace the IC.

1 long, 1 short

DMA controller 1 failure: The DMA controller IC for channel 1 has failed. If possible, replace the IC.

1 long, 2 short

Video vertical retrace failure: The video adapter has probably failed. Replace the video adapter.

1 long, 3 short

Video memory test failure: The video adapter's memory has failed. Replace the video adapter.

1 long, 4 short

Video adapter failure: The video adapter has failed. Replace the video adapter.

1 long, 5 short

64 KB memory failure: A failure has occurred in the base 64 KB of memory. If possible, replace the RAM IC.

1 long, 6 short

Unable to load interrupt vectors: The BIOS was unable to load the interrupt vectors into memory.

1 long, 7 short

Unable to initialize video: This is a video problem. Replace the video adapter first. If the problem persists, replace the motherboard.

1 long, 8 short

Video memory failure: There is a failure in the video memory. Replace the video adapter first. If the problem persists, replace the motherboard.

Compaq

The following information is from the BIOS Central Compaq BIOS Beep Codes page.

Beeps Meaning
1 short

No error: The system is booting properly.

1 long, 1 short

BIOS ROM checksum error: The contents of the BIOS ROM do not match the expected contents. If possible, reload the BIOS from the PAQ.

2 short

General error: No specifics available on what this code means

1 long, 2 short

Video error: Check the video adapter and make sure it's seated properly. If possible, replace the video adapter.

7 beeps (1 long, 1 short, 1 long, 1 short, pause, 1 long, 1 short, 1 short)

AGP video: The AGP video card is faulty. Reseat the card or replace it outright. This beep pertains to Compaq Deskpro systems.

Continuous beep

Memory error: Bad RAM; replace and test

1 short, 2 long

Bad RAM: Reseat RAM, then retest; replace RAM if failure continues.

Phoenix

The following information applies to Phoenix BIOS Q or 4.x. This information is from the Phoenix BIOS beep codes section of the sprers.eu Computer POST and beep codes page.

Dashes indicate pauses between beeps.

Beeps Meaning
Verify real mode.
Get CPU type.
Initialize system hardware.

Initialize chipset registers with initial POST values.

Set in POST flag.
Initialize CPU registers.

Initialize cache to initial POST values.

Initialize I/O.
Initialize Power Management.

Load alternate registers with initial POST values.

Jump to UserPatch0.

Initialize keyboard controller.

BIOS ROM checksum
timer initialization

DMA controller initialization

Reset Programmable Interrupt Controller.

Test DRAM refresh.

Test Keyboard Controller.

Set ES segment to register to 4 GB.

28 Autosize DRAM.
Clear KB base RAM.

Test KB base address lines.

Test KB base memory.
Test CPU bus-clock frequency.
Reinitialize the chipset.
Shadow system BIOS ROM.
Reinitialize the cache.
Autosize cache.

Configure advanced chipset registers.

Load alternate registers with CMOS values.

Set Initial CPU speed.
Initialize interrupt vectors.
Initialize BIOS interrupts.
Check ROM copyright notice.

Initialize manager for PCI Options ROMs.

Check video configuration against CMOS.

Initialize PCI bus and devices.

Initialize all video adapters in system.

Shadow video BIOS ROM.
Display copyright notice.
Display CPU type and speed.
Test keyboard.
Set key click if enabled.
56 Enable keyboard.

Test for unexpected interrupts.

Display message "Press F2 to enter SETUP".

Test RAM between and KB.

Test expanded memory.

Test extended memory address lines.

Jump to UserPatch1.

Configure advanced cache registers.

Enable external and CPU caches.

Display external cache size.
Display shadow message.

Display non-disposable segments.

Display error messages.

Check for configuration errors.

Test real-time clock.
Check for keyboard errors.

Set up hardware interrupts vectors.

Test coprocessor if present.
Disable onboard I/O ports.

Detect and install external RS ports.

Detect and install external parallel ports.

Re-initialize onboard I/O ports.

Initialize BIOS Data Area.

Initialize Extended BIOS Data Area.

Initialize floppy controller.

Initialize hard-disk controller.

Initialize local-bus hard-disk controller.

Jump to UserPatch2.
Disable A20 address line.

Clear huge ES segment register.

Search for option ROMs.
Shadow option ROMs.
Set up Power Management.
Enable hardware interrupts.
Set time of day.
Check key lock.
Erase "F2" message.
Scan for keystroke.
Enter SETUP.
Clear in-POST flag.
Check for errors.

POST complete; prepare to boot operating system.

One beep.
Check password (optional).

Clear global descriptor table.

Clear parity checkers.
Clear screen (optional).

Check virus and backup reminders.

Try to boot with INT
Interrupt handler error.
Unknown interrupt error.
Pending interrupt error.
Initialize option ROM error.
Shutdown error.
Extended Block Move.
Shutdown 10 error.
Initialize the chipset.
Initialize refresh counter.
Check for Forced Flash.
Check HW status of ROM.
BIOS ROM is okay.
Do a complete RAM test.
Do OEM initialization.

Initialize interrupt controller.

Read in bootstrap code.
Initialize all vectors.
Boot the Flash program.
Initialize the boot device.
Boot code was read okay.

IBM Desktop

Beeps Meaning
No beep

No power, loose expansion card (ISA, PCI, or AGP), a short, or an improperly grounded motherboard

1 short System okay
1 long

Video/display problem; video card incorrectly seated or defective

2 short

POST Error displayed on monitor

3 long

Problem with keyboard card

1 long, 1 short Problem with system board
1 long, 2 short

Problem with display adapter (MDA, CGA)

1 long, 3 short Problem with EGA
Repeating short beeps

Problem with power supply or system board

Continuous beep

Problem with power supply or system board

IBM ThinkPad

Beeps Meaning
Continuous beeping System board failure
1 beep with blank display

LCD connector problem, LCD backlight inverter failure, video adapter failure, or LCD assembly failure

1 beep w/message "Unable to access boot source"

Boot device failure or bad system board

1 long, 2 short

System board, video adapter, or LCD assembly failure

1 long, 4 short Low battery voltage
1 beep every second Low battery voltage
2 short w/message

Read the error message on the display

2 short with blank display System board failure

Mylex

Beeps Meaning
1 Normal boot: No problems
2

Video adapter error: Video adapter is not seated or is faulty

3

Keyboard controller error: Keyboard controller IC bad

4

Keyboard error: Keyboard itself might be bad, or the controller IC on the motherboard

5

PIC 0 error: The programmable interrupt controller IC is bad

6 PIC 1 error: Same as above
7

DMA page register error: DMA controller IC is bad

8 RAM refresh error
9 RAM data error
10 RAM parity error
11

DMA controller 0 error: DMA controller IC for channel 0 has failed

12 CMOS RAM error: Bad CMOS RAM
13

DMA controller 1 error: DMA controller IC for channel 1 has failed

14

CMOS RAM battery error: Dead CMOS battery; can usually be replaced

15

CMOS RAM checksum error: CMOS RAM failed

16

BIOS ROM checksum error: BIOS RAM failed

Quadtel BIOS

The following information is from the BIOS Central Quadtel BIOS Beep Codes page.

1 short

Normal boot: System is booting normally.

2 short

CMOS IC error: The CMOS RAM is faulty. Replace the IC if possible.

1 long, 2 short

Video failure: The video adapter is faulty. Reseat the video adapter or replace the adapter if possible.

1 long, 3 short

Peripheral controller error: One or more of the system peripheral controllers is bad. Replace the controllers and retest.

watch the thematic video

5 Beeps on Startup Error And No Display Fix On Desktop Computer. Common Problem Solved.

BIOS Beep Codes


 What is a BIOS Beep Code?When you power on a computer the BIOS immediately takes control of the computer and performs the P.O.S.T (Power On Self Test). At the end of the POST the computer will play an audible 'BEEP' through either the PC's internal speaker of through speakers attached to the sound card (if you have a built-in sound chip). If the POST completed successfully without detecting any problems with then system will play a single short beep to let you know the test is complete and the computer will continue to startup and load the operating system.

If during the POST the BIOS detects a problem it will bios beep error messages display a visual error message on the monitor explaining what the problem is, bios beep error messages. However, if a problem is detected before the BIOS initializes the video card, or a video card is not present or not detected then the BIOS will play several 'BEEPS' through the speaker to let you know there is a problem. Depending on the type of the BIOS you have the BIOS may play beeps in a specific pattern to indicate what the problem is, or play the same beep a number of times indicating the problem. Anti-terrorist non-governmental organization is very important that you pay close attention to the number and/or pattern of the beeps your computer plays on startup.

 Below is a table of bios beep error messages most common AMI, Phoenix and Award BIOS beep codes. AMI (American Megatrends International) BIOS Beep Codes.AMI BIOS uses beeps of the same length and pitch. The error is displayed as a bios beep error messages of beeps. For example, 4 beeps indicated a timer failure.
 BEEP CODE MEANING POSSIBLE CAUSE
 1 Beep (No video) Memory refresh failure Bad memory
 2 Beeps  Memory parity error Bad memory
 3 Beeps  Base 64K mem failure Bad memory
 4 Beeps  Timer not operational Bad motherboard
 5 Beeps Processor error Bad bios beep error messages Beeps   Gate A20 failure Bad CPU or Motherboard
 7 Beeps Processor exception  Bad processor
 8 Beeps Video memory error Bad video card or memory
 9 Beeps ROM checksum error Bad BIOS
10 Beeps CMOS checksum error Bad motherboard
11 Beeps Cache memory bad Bad CPU or motherboard
  Award BIOS Beep CodesAward BIOS uses beeps of varying duration. A long beep will typically last for 2 seconds while a short beep will last only 1 second. Award BIOS also uses beeps of different frequency to indicate critical errors. If an Award BIOS detects that the CPU is overheating it may play a high pitched repeating beep while the computer is running.
 BEEP CODE MEANING POSSIBLE CAUSE
 1 Long, 2 Short Video adapter failure Bad video adapter
 Repeating (Endless loop) Memory error Bad memory or bad connection
 1 Long, 3 Short Video adapter failure Bad video adapter or memory
 High freq. beeps (while running) CPU is overheating CPU fan failure
 Repeating High, Low beeps CPU failure Bad processor
 Phoenix BIOS Beep CodesPhoenix BIOS uses beep code patterns to indicate problems. In the table below the '-' indicates a brief pause between beeps.

Example: 1 - 1 - 2  would sound like BEEP <pause> BEEP <pause> BEEP BEEP

 BEEP CODE MEANING POSSIBLE CAUSE
 1 - 1 - 2  CPU / motherboard failure Bad CPU / motherboard
 1 - 1 - 3 CMOS read/write failure Bad motherboard
 1 - 1 - 4 BIOS ROM failure Bad BIOS chip
 1 - 2 - 1  Timer failure Bad motherboard
 1 - 2 - 2 DMA failure Bad motherboard
 1 - 2 - 3 DMA failure Bad motherboard
 1 - 3 - 1  Memory refresh failure Bad memory
 1 - 3 - 2 64K memory failure Bad memory
 1 - 3 - 3 64K memory failure Bad memory
 1 - 3 - 4 64K memory failure Bad memory
 1 - 4 - 1 Address line failure Bad memory
 1 - 4 - 2 Parity error Bad memory
 1 - 4 - 3 Timer failure Bad motherboard
 1 - 4 - 4 NMI port failure Bad motherboard
 2 - 1 - 1 64K memory failure Bad memory
 2 - 1 - 2 64K memory failure Bad memory
 2 - 1 - 3 64K memory failure Bad memory
 2 - 1 - 4 64K memory failure Bad memory
 2 - 2 - 1 64K memory failure Bad memory
 2 - 2 - 2 64K memory failure Bad memory
 2 - 2 - 3 64K memory failure Bad memory
 2 - 2 - 4 64K memory failure Bad memory
 2 - 3 - 1 64K memory failure Bad memory
 2 - 3 - 2 64K memory failure Bad memory
 2 - 3 - 3 64K memory failure Bad memory
 2 - 3 - 4 64K memory failure Bad memory
 2 - 4 - 1 64K memory failure Bad memory
 2 - 4 - 2 64K memory failure Bad memory
 2 - 4 - 4 64K memory failure Bad memory
 2 - 4 - 4 64K memory failure Bad memory
 3 - 1 - 1 Slave DMA failure Bad motherboard
 3 - 1 - 2 Master DMA failure Bad motherboard
 3 - 1 - 3 Interrupt controller failure Bad motherboard
 3 - 1 -4 Slave IC failure Bad motherboard
 3 - 2 -2 Interrupt Controller failure Bad motherboard
 3 - 2 - 3 <RESERVED> 
 3 - 2 - 4 Keyboard control failure Bad motherboard
 3 - 3 - 1 CMOS batter failure Bad CMOS battery
 3 - 3 - 2 CMOS configuration error Incorrect setting
 3 - 3 - 3 <RESERVED> 
 3 - 3 - 4 Video memory failure Bad video card or memory
 3 - 4 - 1 Video init failure Bad video card or memory
 4 - 2 - 1 Timer failure Bad motherboard
 4 - 2 - 2 CMOS shutdown failure Bad motherboard
 4 - 2 - 3 Gate A20 failure Bad motherboard
 4 - 2 - 4 Unexpected interrupt Bad processor
 4 - 3 - 1 RAM test failure Bad memory
 4 - 3 - 3 Timer failure Bad motherboard
 4 - 3 - 4 RTC failure Bad motherboard
 4 - 4 - 1 Serial port failure Bad motherboard
 4 - 4 - 2 Parallel port failure Bad motherboard
 4 - 4 - 3 Coprocessor failure Bad motherboard or CPU.
 9 - 2 - 1 Video adapter incompatibility Use a different brand of video card
   
*Designs, specifications and package contents are subject to change without notice. Various trademarks belong to their respective owners. Please read the legal notice.  bios beep error messages All rights reserved. Amptron International Inc. Rowland St., City of Industry CA., ()  

Step-By-Step: Deciphering BIOS beep codes

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Step-By-Step: Deciphering BIOS beep codes

Discover what the beeps your computer makes at start up mean

Each time a user turns on his or her computer, the BIOS gathers information about the major system components and performs a special test called the Power On Self Test (POST) to make sure that each component is functioning correctly. If the test identifies a hardware problem, the BIOS will display an error message on the monitor. But, if the failure occurred before the BIOS could access the video card, the BIOS will issue special beep codes to alert the user to the problem.

In this article, I&#;ll take a detailed look at the beeps that are issued by various BIOS manufacturers, and I&#;ll provide you with a resource for more detailed information. Understanding these noises will allow you to troubleshoot a multitude of hardware problems.

Annoying noises, flashing lights
During a POST session, your computer has several ways to communicate: Either through flashing indicator lights, the computer&#;s speaker, or via the monitor. Since the monitor is not initialized until later in the process, early failures are communicated by red or absent status lights, such as the power and hard drive activity lights, or by sound in the form of beeps.


POST diagnostic cards

Another option is to purchase a POST diagnostic card to intercept POST errors at their source via the ISA or PCI bus. Cards are available for either bus and typically contain one or two digital readouts that present the codes, as well as LEDs for monitoring the power supply. Since POST codes are more numerous than beep codes (there may be 10 beep codes to POST codes), a diagnostic card can help you track the progress of the POST and see more detail about what caused a failure or warning.

An ISA card is preferred, as it&#;s possible that a PCI card may not report all the POST codes. Because the ISA bus is initialized first, the PCI bus only receives the codes generated after the ISA bus is initialized. In addition, ISA busses connect to the South Bridge chip, bios beep error messages, so damaged motherboards may not be able to send codes to the PCI bus at all.

You can obtain more information on POST diagnostic cards from manufacturers such as Xetal Systems Inc., makers of POSTmortem; Microsystems Development Technologies Inc.&#;s Post Code Master, or by running a Web search.


Heard any good beeps lately?
Naturally, if the speaker is damaged or disconnected, you&#;ll have no way of knowing what ails your hardware without a diagnostic card. At the conclusion of a successful POST, the computer should beep once or twice. These beeps inform you that your hardware is in good working order. If you don&#;t hear this &#;all&#;s well&#; beep, here are a few things to check:
  • Are external speakers connected? On many computers, the computer speaker is disabled when a jack is connected.
  • Is the volume too low? Use the function keys indicated by the manufacturer to increase the volume.
  • Did someone disconnect the speaker? People do this occasionally because the beeps bother them. Reconnect the leads to the motherboard jumpers.
  • Is the onboard speaker disabled in the BIOS? Re-enable the speaker in the BIOS setup program. Note: It&#;s also a good idea to include a small speaker mounted to a motherboard with some standard leads as part of your troubleshooting kit.

To create unique error messages, codes emit combinations of long and short beeps, similar to Morse code, bios beep error messages. Instead of letters, however, each unique sequence indicates a different problem with components. As you might have guessed, in contrast to a universal standard such as Morse code, each BIOS manufacturer creates its own beep sequences.

POST time
Below are audible codes for several common BIOSs that I obtained from The BIOS Companion. The Companion excels in presenting almost every BIOS setting that can be configured. It also contains tables of POST codes. It can be purchased online (as a PDF file) for $15 or printed for $, or it can be acquired as part of a larger set, called The PC Engineer&#;s Reference Book. You&#;ll want to check this out if you support many different PC types, including legacy equipment. For more information on these and other reference books, see Electrocution Technical Publishers.

American Megatrends Inc. BIOS
Standard beep codes for computers using American Megatrends Inc. (AMI) BIOSs are listed in Table A.

Table A
American Megatrends Inc. BIOS beep codes

Award BIOS
Award BIOSs only have one beep code: One long beep, followed by two short beeps, indicates that the BIOS is unable to initialize the video screen.

Compaq BIOS
Standard beep codes for Compaq computers with no text and error message are shown in Table B.

Table B
Other Compaq beeps are associated with specific text messages sqlstate 42000 error 22029 the video screen.

Dell BIOS
Beep codes for Dell computers (Phoenix BIOS) are listed in bios beep error messages C. (All are short beeps separated bios beep error messages pauses.)

Table C
To view screen messages that accompany beep codes, make sure the Phoenix QuietBoot feature is disabled by pressing [Esc] during boot. This will display POST messages.

IBM beep codes
IBM personal computers (Thinkpads and Desktops) use a Phoenix-based BIOS. An extensive amount of information can be gleaned from the beep codes of Phoenix BIOSs. SincePhoenix has used a four-part system: four bursts of short beeps separated by pauses. For example, in Table D below, a value such as (shutdown error), means four short beeps, pause, two short beeps, bios beep error messages, pause, three short beeps, pause, one short beep. While the codes in the table below will apply in general, to be sure, always check the specification for your particular model. The beep codes for IBM computers are listed in Table D. (All are short beeps separated by pauses.)
Table D

Number of beepsDescription
Verify real mode
Get CPU type
Initialize system hardware
Initialize chipset registers with initial values
Set in POST flag
Initialize CPU registers
Initialize cache to initial values
Initialize I/O
Initialize power management
Load alternative registers with initial POST values
Jump to UserPatch0
Initialize timer initialization
timer initialization
DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test Keyboard Controller
Set ES segment register to 4GB
Autosize DRAM
Clear K base memory
Test K base address lines
Test 51K base memory
Test CPU bus-clock frequency
CMOS RAM read/write failure (This commonly indicates a problem on the ISA bus such as a card not seated.)
Reinitialize the chipset
Shadow system BIOS ROM
Reinitialize the cache
Autosize the cache
Configure advanced chipset registers
Load alternate registers with CMOS values
Set initial CPU speed
Initialize interrupt vectors
Initialize Bios beep error messages interrupts
Check ROM copyright notice
Initialize manager for PCI Options ROMs
Check video configuration against CMOS
Initialize PCI bus and devices
Initialize all video adapters in system
Shadow video BIOS ROM

Beep Codes

Standard Original IBM POST Error Codes

1 short beep

Normal POST - system is ok
2 short beepsPOST Error - error code shown on screen
No beepPower supply or system board problem
Continuous beepPower supply, system board, or keyboard problem
Repeating short beepsPower supply or system board problem
1 long, 1 short beepSystem board problem
1 long, 2 short beepsDisplay adapter problem (MDA, CGA)
1 long, 3 short beepsEnhanced  Graphics Adapter (EGA)
3 long beeps keyboard card
AMI BIOS Beep Codes
1Short BeepOne beep is good! Everything is ok, that is if you see things on the screen. If you don't see anything, check your monitor and video card first. Is everything connected? If they seem fine, your motherboard has some bad chips on it. First reset the SIMM's and reboot. If it does the same thing, one of the memory chips on the motherboard are bad, and you most likely need to get another motherboard since these chips are soldered on. 
2 Short Getimagesize function.getimagesize read error computer has memory problems. First check video. If video is working, you'll see an error message. If not, you have a parity error in your first 64K of memory. First check your SIMM's, bios beep error messages. Reseat them and reboot. If this doesn't do it, the memory chips may be bad. You can try switching the first and second banks memory chips. First banks are the memory p2015 error lights that your CPU finds its first 64K of base memory in. You'll need to consult your manual to see which bank is first. If all your memory tests good, you probably need to buy another motherboard. 
3 Short BeepsBasically the same thing as 2 beeps, bios beep error messages. Follow that diagnosis above. 
4 Short BeepsBasically the same thing as 2 beeps. Follow that diagnosis above. It could also be a bad timer 
5 Short BeepsYour motherboard hasp error 27 terminal services complaining. Try reseating the memory and rebooting. If that doesn't help, you should consider another motherboard. You could probably get away with just replacing the CPU, but that's not too cost-effective. Its just time to upgrade! 
6 Short BeepsThe chip on bios beep error messages motherboard that controls your keyboard (A20 gate) isn't working. First try another keyboard. If it doesn't help, reseat the chip that controls the keyboard, bios beep error messages, if it isn't soldered in. If it still beeps, replace the chip if possible. Replace the motherboard if it is soldered in. 
7 Short BeepsYour CPU broke overnight. Its no good. Either replace the Bios beep error messages, or buy another motherboard. 
8 Short BeepsYour video card isn't working, bios beep error messages. Make sure it is seated well in the bus. If it still beeps, either the whole card is bad or the memory on it is. Best bet is to install another video card. 
9 Short BeepsYour BIOS is bad, bios beep error messages. Reseat or Replace the BIOS. 
10 Short BeepsYour problem lies deep inside the CMOS. All chips associated with the CMOS will likely have to be replaced. Your best bet is to get a new motherboard.
11 Short BeepsYour problem is in the Cache Memory chips on the motherboard. Reseat or Replace these chips.
1 Long, 3 Short BeepsYou've probably just added memory to the motherboard since this is a conventional or extended memory failure. Generally this is caused by a memory chip that is not seated properly, bios beep error messages. Reseat the memory chips.
1 Long, 8 Short BeepsDisplay / retrace test failed. Reseat the video card.

Phoenix BIOS Beep Codes

These audio codes are a little more detailed then the AMI codes. This BIOS emits three sets of beeps. For example, 1 -pause- 3 -pause 3 -pause. This is a combo and each set of beeps is separated by a brief pause. Listen to this sequence of sounds, bios beep error messages, count them, and reboot and count again if you have to.

Your computer can't read the configuration info stored in the CMOS. Replace the motherboard. 
Your BIOS needs to be replaced. 
You have a bad timer chip on the motherboard. You need a new motherboard. 
The motherboard is bad. 
The motherboard is bad. 
You'll need to replace the motherboard. 
You'll need to replace the motherboard. 
The motherboard is bad. 
The motherboard is bad. 
Some of your memory is bad. 
2-_-_ Any combo of beeps after two means that some of your memory is bad, and unless you want to get real technical, you should probably have the guys in the lab coats test the memory for you. Take it to the shop. 
One of the chips on your motherboard is broken. You'll likely need to get another board. 
One of the chips on your motherboard that checks the keyboard is broken, bios beep error messages. You'll likely need to get another board. 
Your computer can't find the video card, bios beep error messages. Is it there? If so, try swapping it with another one and see if it works. 
Your video card isn't working. You'll need to replace it. 
There's a bad chip on the motherboard. You need to buy another board. 
First check the keyboard for problems. If nothing, bios beep error messages, you have a bad motherboard. 
Same as  
One of the cards is bad. Try yanking out the cards one by one to isolate the culprit. Replace the bad one. The last possibility is to buy another motherboard. 
Replace the motherboard. 
See
See
Time bios beep error messages day clock failure. Try running the setup program that comes with the computer. Check the date and time. If that doesn't work, replace the battery. If that doesn't work, replace the power supply. Bios beep error messages may have to replace the motherboard, but that is rare. 
Your serial ports are acting up, bios beep error messages. Reseat, or replace, the I/O card. If the I/O is on the motherboard itself, disable them with a jumper (consult your manual to know which one) and then add an I/O card. 
Seebut this time is your Parallel port that's acting up.
You math coprocessor is having problems. Run a test program to double-check it. If it is indeed bad, disable it, or replace it.
Low Your motherboard is having problems
Low This is an Extended CMOS RAM problem, check your motherboard battery, bios beep error messages, and motherboard.

Award BIOS Beep Codes:

Beeps

Error Message

Description

1long, 2 shortVideo adapter errorEither video adapter is bad or is not seated properly.  Also, bios beep error messages, check to exception class edbengineerror index does not exist the monitor cable is connected properly.
Repeating (endless loop)Memory errorCheck for improperly seated or missing memory.
1long, 3shortNo video card or bad video RAMReseat or replace the video card.
High frequency beeeps while runningOverheated CPUCheck the CPU fan for proper operation. Check the case for proper air flow.
Repeating High/LowCPUEither the CPU is not bios beep error messages properly or the CPU is damaged. May also be due to excess heat. Check the CPU fan or BIOS settings for proper fan speed.
BeepsError MessageDescriptionCPU test failureThe CPU is faulty.Low System board select failureThe motherboard is having an
undetermined fault.CMOS read/write errorThe real time clock/CMOS is faulty.Low Extended CMOS RAM failureThe extended portion of the CMOS
RAM has failed.BIOS ROM checksum errorThe BIOS ROM has failed.PIT failureThe programmable interrupt timer has
failed.error mysql connect rowspan="1" colspan="1">DMA failureThe DMA controller has failed.DMA read/write failureThe DMA controller has failed.RAM refresh failureThe RAM refresh controller has failed64KB RAM failureThe test of the first 64KB RAM has
failed to startFirst 64KB RAM failureThe first RAM IC has failed.First 64KB logic failurebios beep error messages first RAM control logic has failedAddress line failureThe address line to the first fatal error system RAM
has failedParity RAM failureThe first RAM IC has failed.EISA fail-safe timer testMotherboard failureEISA NMI port testMotherboard failure64KB RAM failureBit 0; This data bit on the first RAM IC
has failed.64KB RAM failureBit 1; This data bit on the first RAM IC
has failed.64KB RAM failureBit 2; This data bit on the first RAM IC
has failed.64KB RAM failureBit 3; This data bit on the first RAM IC
has failed.64KB RAM failureBit 4; This data bit on the first RAM IC
has failed.64KB RAM failureBit 5; This data bit on the first RAM IC
has failed.64KB RAM failureBit 6; This data bit on the first RAM IC
has failed.64KB RAM failureBit 7; This data bit on the first RAM IC
has failed.64KB RAM failureBit 8; This bios beep error messages bit on the first RAM IC
has failed.64KB RAM failureBit 9; This data bit on the first RAM IC
has failed.64KB RAM failureBit 10; This data bit on run error 429 first RAM
IC has failed.64KB RAM failureBit 11; This data bit on the first RAM
IC has failed.64KB RAM failureBit 12; This data bit on the first RAM
IC has failed.64KB RAM failureBit 13; This data bit on the first RAM
IC has failed.64KB RAM failureBit 14; This data bit on the first RAM
IC has failed.64KB RAM failureBit 15; This data bit on the first RAM
IC has failed.Peripheral DMA register failurebios beep error messages DMA controller has failed.Central DMA register failureThe DMA controller had failed.Central interrupt mask register failureThe interrupt controller IC has failedPeripheral interrupt mask register failureThe interrupt controller IC has failedInterrupt vector errorThe BIOS was unable to load the
interrupt vectors into memory.Reserved Keyboard controller failureThe keyboard controller has failed.CMOS RAM power badCMOS battery failureCMOS configuration errorpassword error pltdraw colspan="1">The CMOS configuration has failed.Reserved Video memory failureThere is a problem with the video
memory.Video initialization failureThere is a problem with the video
adapter.Timer failureThe system's timer IC has failed.Shutdown failureThe CMOS has failed.Gate A20 failureThe keyboard controller has failed.Unexpected interrupt in protected modeThis is a CPU problem.RAM test failureSystem RAM addressing circuitry is
faulty.Interval timer channel 2 failureThe system timer IC has failed.Time of day clock failureThe real time clock/CMOS has failed.Serial port failureA error has occurred in the serial port
circuitryParallel port failureA error has occurred in the parallel
port circuitryMath coprocessor failureThe math coprocessor has failed.

SIRIS, ALTO, and NAS: Explaining the Boot Process, Beep Codes, and BIOS

Topic

The article explains the boot process for a Datto appliance, its associated samsung 3185 image error ghjibdrf codes, and the BIOS settings.

See also the article on a device's LEDs bios beep error messages blinking/color patterns.

Environment

  • Datto SIRIS
  • Datto ALTO
  • Datto NAS

Description

Boot Process

The boot process for every unit starts with the POST or Power On Self Test.

The POST is the process by which a motherboard will check all of its components and hardware. This includes:

  • Processor model and speed
  • RAM quantity and speed
  • Hard drive detection
  • USB initialization
  • IPMI initialization (if applicable)
  • Hardware RAID cards / LSI BIOS
  • Intel NIC BIOS

Example POST Screen

Beep Codes

One of the most important events during the POST process is the POST beep.

If a motherboard is malfunctioning and is unable error device not found POST, it will beep certain codes which can help you identify the failure.

Some beep codes are standard, although every board is different and therefore the beeps can change between different BIOS manufacturers. Commonly used motherboards on Datto appliances include (but are not limited to), ASUS, SuperMicro and ASRock.

The following are basic beep codes for the ASUS M4A88T-M motherboard:

  • 1 short beep usually signifies that everything is OK
  • 1 long beep followed by 2 short beeps is a memory issue. Reseat the RAM and reboot.
  • 1 long beep followed by 3 short beeps is a graphics-related error. Reseat the RAM and reboot. If you get the same beep code, this could be a possible bad motherboard or processor.
  • 5 short beeps is a CPU issue.

BIOS Settings

The BIOS settings are critical to the operation of the Datto, bios beep error messages. The most important settings are:

  • Date and Time (Incorrect settings can cause unwarranted FSCK scans)
  • Hard Drives MUST be set to AHCI or Advanced Host Controller Interface (As opposed to IDE or RAID)
  • Boot order must be configured so that the OS drive is at the top of the list. If you are experiencing informatica error 32512 blinking cursor, it is likely due to the device trying to boot from an array drive. Contact Datto Tech Support for assistance. All other bootable media should be disabled if possible
  • Virtualization must be enabled. (AKA [Secure Virtual Machine Mode], [Vt-d], [Virtualization])
  • Fans are set to FULL speed. Infobase shared access error fan noise becomes an issue for you or your client, see the article Changing The Fan Speed On A Device.
  • On some server boards, the RAM speed must be manually set to Mhz (a non-issue for new devices)
  • UMA Shared memory is limited to 64mb, to allow for maximum simultaneous virtualizations
  • Unit is set to not halt if it detects errors (such as no keyboard or monitor connected)
  • The device is set to turn on after AC power loss

Navigating the BIOS

The BIOS is slightly different across all devices but many settings are organized in the same way.

  • The Basic tab or Front bios beep error messages usually has options for:
  • The Advanced tab usually has the options for:
    • ATA devices [AHCI Mode]
    • Virtualization [Secure Virtual machine Mode]
  • The Integrated peripherals menu usually has options for:
    • Disabling Floppy
    • Limiting UMA Share memory to 64mb
    • Enabling LAN PXE boot (if necessary)
  • Boot order and hard disk drives often has its own tab
  • The Security bios beep error messages has the option for setting the BIOS password

To save and exit quickly, press F10.

Interpretation of Computer Error Beep Codes

Interpretation of Computer Error Beep Codes

If you are clueless about what that mysterious computer beeping, accompanied with startup issues explay gps pn-375 load dill error all about, this article will be a revelation. Here, I specifically discuss what different beep signals mean on startup of a computer, for various BIOS brands.

You switch on your computer as usual and wait patiently as it goes through its startup routine. However, to your dismay, instead of the operating system booting in neatly, what you hear are mysterious beeps at startup. The computer beeps and fails to boot. Reminiscent of R2-D2&#;s beeps and whistles language in gameguard execute error Wars&#;, your computer is trying to tell you what&#;s wrong with it, in a coded, Morse code type language! By correctly interpreting the beeps, you can actually find out what&#;s causing the booting process to fail. In this Techspirited article, I specifically interpret what error beeps at startup mean for different types of BIOS (Basic Input Output System) setups.

About Computer Error Beep Codes Displayed During POST

BIOS is the internal stabilization and control system of the computer, which oversees the working of all the constituent parts. It loads or boots the operating system and implements a complete status check before that. This Power-on Self Test or POST process detects errors within the computer system and relays them to the user, through a cryptic &#;beep&#; language. Every BIOS brand has its own beep code, which you will need access to, if you want to know what ails your computer. In the following lines, bios beep error messages, I help you in figuring out how to interpret computer error beep codes for various Dota.by critical error types, ranging from American Megatrends to Compaq and Award. Hear the number of beeps carefully and then interpret the error message accordingly.

Interpreting the Beep Codes

To figure out what do 3 beeps mean on startup of a computer, you will have to first figure out the BIOS type of the computer. It appears on the screen during startup. If you can&#;t see the startup screen, you can find the BIOS type, from the knowledge of the motherboard type. In the rest of this article, you will find a decoding table for most of the commonly used BIOS firmware, installed on computer motherboards.

Deciphering AMI BIOS Beep Error Code

AMI BIOS POST Error Codes
Beep SignalError Interpretation
1 Long BeepNo Error, Completion of POST Routine
1 Long, 2 Short BeepsVideo BIOS ROM failure
1 Long, 3 Short BeepsMemory test has detected an error
1 Long, 8 Short BeepsVideo Adapter Error
2 Short BeepsHardware Test Failure During POST routine
1 Short BeepRefresh failure in DRAM bios beep error messages to malfunctioning programmable interrupt timer
2 Short BeepsRAM IC malfunction due to parity error runtime error 1004 odbc error first 64 K memory
3 Short BeepsBase memory failure in first 64 K of random access memory IC
4 Short BeepsSystem timer IC failure
5 Short BeepsCPU failure
6 Short BeepsKeyboard controller IC failure, preventing gate Elf name error samsung controlled processor switching to protected mode
7 Short BeepsException error in CPU, due to faulty motherboard circuitry
8 Short BeepsDefective system video adapter
9 Short BeepsDefective BIOS ROM, check sum error
10 Short BeepsCMOS shutdown failure
11 Short BeepsFaulty L2 cache

Deciphering AST BIOS Beep Error Code

AST BIOS POST Error Codes
Beep SignalError Interpretation
1 Long BeepFailure of Channel 0 DMAI controller IC
1 Long Beep, bios beep error messages, 1 Short BeepFailure of Channe; 1 DMAI controller IC
1 Long Beep, 2 Short BeepsFailed video vertical retrace, due to video adapter failure
1 Long Beep, 3 Short BeepsVideo adapter memory failure
1 Long Beep, 4 Short BeepsComplete video adapter failure
1 Long Beep, 5 Short BeepsBase 64 KB memory failure in RAM IC
1 Long Beep, 6 Short BeepsInability of BIOS to load vertical vectors into memory
1 Long Beep, 7 Short BeepsVideo initialization failure due to faulty video adapters or motherboard
1 Long Beep, 8 Short BeepsComplete video memory failure, due to faulty adapter or motherboard
1 Short BeepIndicates failure of CPU register
2 Short BeepsFailure of keyboard controller
3 Short BeepsMotherboard circuitry error
4 Short BeepsCommunication failure with keyboard, due to faulty keyboard controller IC or a faulty keyboard
5 Short BeepsKeyboard input malfunction, due to keyboard controller IC failure
6 Short BeepsMotherboard chipset failure
9 Bios beep error messages BeepsBIOS ROM Failure
10 Short BeepsSystem timer IC failure
11 Short BeepsMotherboard Failure
12 Short BeepsCMOS IC/Real time clock failure

Deciphering Award BIOS Beep Error Code

Award BIOS POST Error Codes
Beep SignalError Interpretation
1 Long, 2 Short BeepsError in video adapter or loose monitor cable
1 Long, 3 Short BeepsAbsent or Loosely Inserted Video Card
Repeated BeepsMissing or loosely inserted memory IC
Rapid Beeping During OperationCPU Overheating
Repeated High or Low BeepsDamaged, overheated or loosely inserted CPU

Deciphering Compaq BIOS Beep Error Code

Compaq BIOS POST Error Codes
Beep SignalError Interpretation
1 Short BeepNot an error, system booting smoothly
1 Long, 1 Short BeepChecksum Error in BIOS ROM
1 Long, 2 Short BeepsImproperly connected or faulty video adapter
7 Beeps (Only for Compaq Deskpro)Faulty AGP video card
Continuous BeepRAM error/Faulty RAM
1 Short, 2 Long BeepsImproperly connected RAM or Faulty RAM

Deciphering Phoenix BIOS Beep Error Code

(Phoenix BIOS error codes are a combination of beeps with pauses in between. Here means, 2 beeps, pause, 1 beep, pause, 2 beeps)

Phoenix BIOS POST Error Codes
Beep Signal SequenceError Interpretation
CPU malfunction, may need replacement
(Low volume beeps)Motherboard Fault
Real time clock error or faulty CMOS, in need of replacement
(Low volume beeps)Failure of extended CMOS RAM
Checksum error in BIOS ROM
Failure of programmable bios beep error messages timer (PIT)
Failure of DMA controller IC
Failure of DMA controller
Failure of RAM refresh controller
RAM (64 KB) failure
Dysfunctional first RAM IC
Failure of RAM control logic
Failure of address line to first 64 KB RAM
RAM parity failure, indicating RAM IC malfunctioning
Motherboard Failure detected by EISA fail-safe timer test
Motherboard Failure detected by EISA NMI port test
Failure of Bit 0 on first (64 KB) RAM IC
Failure of Bit 1 on first (64 KB) RAM IC
Failure of Bit 2 on first (64 KB) RAM IC
Failure of Bit 3 on first (64 KB) RAM IC
Failure of Bit 4 on first (64 KB) RAM IC
Failure of Bit 5 on first (64 KB) RAM IC
Failure of Bit 6 on first (64 KB) RAM IC
Failure of Bit 7 on first (64 KB) RAM IC
Failure of Bit 8 on first (64 KB) RAM IC
Failure of Bit 9 bios beep error messages first (64 KB) RAM IC
Failure of Bit 10 on first (64 KB) RAM IC
Failure of Bit 11 on first (64 KB) RAM IC
Failure of Bit 12 on first (64 KB) RAM IC
Failure of Bit 13 on first (64 KB) RAM IC
Failure of Bit 14 on first (64 KB) RAM IC
Failure of Bit 15 on first (64 KB) RAM IC
Failure of bios beep error messages DMA register, leading to DMA controller malfunction
DMA controller failure due to faulty master DMA register
Faulty interrupt controller IC
Failure of Interrupt controller IC
BIOS failure in loading interrupt vectors, motherboard may need replacement
Faulty keyboard controller IC
CMOS RAM or CMOS battery failure
CMOS configuration failure
Video memory or video adapter failure
Video adapter failure leading to video initialization problems
System timer IC failure
CMOS IC failure
Keyboard controller failure
Unexpected Interrupt caused due to a CPU problem
Faulty RAM addressing circuitry
System timer IC failure
CMOS internal real time clock failure
Faulty serial port circuitry
Faulty parallel port circuitry
Math coprocessor failure

So you need a good ear to interpret what the code says. Once you know the beep sequence, you can figure out what&#;s wrong with your computer, to take appropriate action. Using the tables above, you can easily interpret what error allocating mesh smooth computer is conveying to you. The beauty of the beep code lies in the fact that you can interpret what&#;s wrong, even when the monitor is not working and nothing is being displayed. Listen to the beeps, decipher them correctly from the diagnostic tables provided above and fix up your computer problem!

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