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3 November 2009

IBM BIOS beep codes

No Beeps
No Power, Loose Card, or Short.

1 Short Beep
Normal POST, computer is ok. No problem

2 Short Beep
POST error, review screen for error code.
See screen


Continuous Beep
No Power, Loose Card, or Short.

Repeating Short Beep
No Power, Loose Card, or Short.

One Long and one Short Beep
Motherboard issue.

One Long and Two Short Beeps
Video (Mono/CGA Display Circuitry) issue.

One Long and Three Short Beeps.
Video (EGA) Display Circuitry.

Three Long Beeps
Keyboard / Keyboard card error.

One Beep, Blank or Incorrect Display
Video Display Circuitry.