BIOS Error Codes Beep Codes, Beep Tones: AMI PHOENIX AWARD

If the computer runs into an error, where it can no longer control the screen, the BIOS may still express itself with beeps (beep codes). The BIOS is the small program that reports immediately when the PC is switched on, before the operating system is loaded. Depending on the BIOS manufacturer, the beeps are different and mean something different. In order to be able to interpret the tones correctly, it is therefore important to know which BIOS variant is in use. This information can be found in the description of the mainboard. If this is not available, a description can be read on the mainboard, and a look at the mainboard manufacturer's page may also help.


1 long Power on Self Test successful
1 short DRAM refresh error
2 short Parity error
3 short Base 64K RAM error
4 short System timer error Battery empty or mainboard defective
5 short Processor (CPU) error
6 short Keyboard controller error
7 short Virtual mode exception error
8 short Graphic card memory error
9 short ROM BIOS checksum error
10 short
System board error
11 short Cache memory error
1 long, 1 short
System board error
1 long, 2 short Graphics card error
1 long, 3 short
Conventional/Extended memory failure
1 long, 4 short Timer defective
1 long, 5 short
Processor (CPU) error
1 long, 6 short Keyboard controller defective
1 long, 7 short
Virtual mode problem
1 long, 8 short Graphic memory error
1 long, 9 short
Checksum error
2 short, once long Graphics card contact error
2 long, 2 short
Video error
3 short, 3 long, 3 short RAM defective
Continuous tone
Power supply defective


1 long, 2 short Graphics problem (system cannot display additional info)
1 long, 3 short no graphics card or defective graphics memory
high frequency beeps during operation CPU too hot
repeated high low processor (CPU)
repeated (endless) memory error
all other beep(s) Memory


1 beep ROM error
2 beeps Memory (RAM) not recognized
3 Beeps Mainboard error
4 Beeps Working memory (RAM) defective
5 Beeps CMOS battery error
6 Beeps Graphics card error
7 Beeps CPU Error

Apple Macintosh

3x short, pause, 3x short Memory, RAM check failed
3x long, 2x short, 3x long EFI ROM error or ROM recovery mode


1 short beep normal start, computer is ok
2 short beeps POST error, additional error code is displayed on screen
no beep power supply, system board, processor error
continuous beep power supply, system board, keyboard problem
repeated short beep Power supply or system board problem
1 long, 1 short beep System board problem
1 long, 2 short beeps Graphic card problem
1 long. 3 short beeps Graphic card problem
3 long beeps Keyboard problem

IBM Post Diagnostic Codes

If the computer still manages to display the image, the following error codes provide an indication of the error:

100 - 199 System board
200 - 299 Memory
300 - 399 Keyboard
400 - 499 Graphics
500 - 599 Graphics
600 - 699 Floppy 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 disk and/or adapter
1800 - 1899 Expansion Unit (XT)
2000 - 2199 Bisynchronous communication adapter
2400 - 2599 EGA system-board video (MCA)
3000 - 3199 Network Adapter
4800 - 4999 Internal modem
7000 - 7099 Phoenix BIOS Chips
7300 - 7399 3.5 floppy disk drive
8900 - 8999 MIDI adapter
11200 - 11299 SCSI adapter
21000 - 21099 SCSI Fixed Disk and Controller
21500 - 21599 SCSI CD-ROM System


Beep Code Description
1-1-1-1 RAM chip error
1-1-3-3 CPU
1-1-4-3 I/O initialization
1-2-1-1 Power management initialization
1-2-2-1 Keyboard Controller
1-2-2-3 BIOS ROM checksum. Replace BIOS, update
1-2-3-1 8254 timer initialization, system board defective
1-2-3-3 8237 DMA controller initialization, system board defective
1-3-1-1 Main memory defective
1-3-1-3 Keyboard controller.
1-3-3-1 Working memory error
1-3-4-1 Error in working memory
1-3-4-3 Error in working memory
1-4-1-3 Test CPU bus-clock frequency.
1-4-2-4 Chipset error
1-4-3-2 Cache error
2-1-1-1 Processor (CPU) defective
2-1-3-1 Video configuration
2-1-3-2 Initialize PCI bus and devices.
2-1-3-3 Initialize graphics card.
2-1-4-1 Graphics card
2-1-4-3 Graphics card
2-2-1-1 show processor type and speed
2-2-1-3 test keyboard
2-2-3-3 show Press F2 to enter SETUP.
2-2-4-1 Test memory between 512 and 640k.
2-3-1-1 Tests expanded memory.
2-3-1-3 Test extended memory address lines.
2-3-2-3 configure cache registers.
2-3-3-1 Enable cache (external and CPU caches).
2-3-3-3 show external cache size
2-4-1-1 show error messages
2-4-1-3 search for configuration errors
2-4-2-1 test clock
2-4-2-3 Test keyboard
3-1-1-3 RS232 port
3-1-2-1 parallel ports.
3-1-2-3 Re-initialize onboard I/O ports.
3-1-4-1 Initialize floppy disk controller.
3-2-1-1 Initialize hard disk controller.
3-2-1-2 Initialize local-bus hard disk controller.
3-2-4-1 Set-up power management.
3-3-3-1 Clear F2 message
3-3-4-1 Enter SETUP.
4-3-4-2 Initialize boot device.
4-3-4-3 Boot code was read OK.
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Publication: 2022-09-24 from Bernhard | Übersetzung Deutsch |🔔 | Comments:0

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