<p>IBM BIOS Beep Codes</p><table>
Audio Code Description
1 short beep Normal POST system okay
2 short beeps POST error view code onscreen
No beep Power supply, motherboard
Continuous beep Power supply, motherboard
Repeating short beeps Power supply, motherboard
1 long, 1 short beep Motherboard
1 long, 2 short beeps Video card (MDA/CGA)
1 long, 3 short beeps Video card (EGA/VGA)
3 long beeps 3270 keyboard card