Symptom 1: “A disk read error occurred” error screen on startup · Incorrect or invalid MBR configuration · Improperly configured partition table · Faulty hard. So you receive the dreaded "a disk read error occurred. Press Ctrl+Alt+Del to restart". Multiple restarts result in the same error message. In most cases, the read disk error indicates hard drive damage. When boot sector on hard drive is damaged or system partition gets bad sectors, then system.