IBM Desktop BIOS:
Beeps | Error Message | Description | |||
1 short | Normal POST
| System is booting properly | |||
2 short | Initialization error | Error code is displayed | |||
1 long, 1 short | System board error | ||||
1 long, 2 short | Video adapter error | ||||
1 long, 3 short | EGA/VGA adapter error | ||||
3 long | 3270 keyboard adapter error | ||||
Continuous | Power supply error | Replace the power supply | |||
999s | Power supply error | Replace the power supply | |||
No beep | Power supply | Replace the power supply |