IBM BIOS beep codes - beep codes for troubleshooting
Beep codes are code sounds that occur in the CPU when you start up the system; incase there is a problem. The various beep codes can be used as an aid to troubleshooting.Below are general IBM BIOS Beep codes that can occur.
Note: Because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary.
Beep Code | Description |
No Beeps | No Power, Loose Card, or Short. |
1 Short Beep | Normal POST, computer is ok. |
2 Short Beep | POST error, review screen for error code. |
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. |