Appendix D. BIOS Beep Codes
When your computer can’t start or give you a display, it can still provide you with useful troubleshooting information in the form of beeps. Depending on your motherboard’s BIOS (consult your motherboard manual to determine which one you have), these can provide useful feedback to help you diagnose and fix problems with your PC.
Sound | Meaning |
1 short beep | Normal–everything OK |
2 short beeps | POST error (shown on screen) |
Continuous beep | Power supply, system board, or keyboard problem |
Repeating short beeps | Power supply or system board problem |
1 long, 1 short beep | System board problem |
1 long, 2 short beeps | Display adapter problem |
1 long, 3 short beeps | Enhanced graphics adapter problem ... |
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