Thursday, January 22, 2009

Standard Original IBM POST Error Codes

Standard Original IBM POST Error Codes

1 short beep

Normal POST - system is ok
2 short beeps POST Error - error code shown on screen
No beep Power supply or system board problem
Continuous beep Power supply, system board, or keboard 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 (MDA, CGA)
1 long, 3 short beeps Enhanced  Graphics Adapter (EGA)
3 long beeps 3270 keyboard card

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