Power On Self Test Beep Codes for AMI BIOS

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 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 (MDA, CGA)
1 long, 3 short beeps	Enhanced Graphics Adapter (EGA)
3 long beeps	3270 keyboard card

IBM POST Diagnostic Code Descriptions

100 - 199	System Board
200 - 299	Memory
300 - 399	Keyboard
400 - 499	Monochrome Display
500 - 599	Color/Graphics Display
600 - 699	Floppy-disk drive and/or Adapter
700 - 799	Math Coprocessor
900 - 999	Parallel Printer Port
1000 - 1099	Alternate Printer Adapter
1100 - 1299	Asynchronous Communication Device, Adapter, or Port
1300 - 1399	Game Port
1400 - 1499	Color/Graphics Printer
1500 - 1599	Synchronous Communication Device, Adapter, or Port
1700 - 1799	Hard Drive and/or Adapter
1800 - 1899	Expansion Unit (XT)
2000 - 2199	Bisynchronous Communication Adapter
2400 - 2599	EGA system-board Video (MCA)
3000 - 3199	LAN Adapter
4800 - 4999	Internal Modem
7000 - 7099	Phoenix BIOS Chips
7300 - 7399	3.5" Disk Drive
8900 - 8999	MIDI Adapter
11200 - 11299	SCSI Adapter
21000 - 21099	SCSI Fixed Disk and Controller
21500 - 21599	SCSI CD-ROM System