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BIOS Beep Codes

Everytime you boot up your computer, the BIOS runs a self test. Generally this will result in a single beep. You probably don't take much notice of this beep, but each beep has a specific meaning. The single beep means that everything is OK.

However, there are a variety of different beep codes that represent different problems and errors. If your computer is having trouble, you will want to pay attention to the beep code as this will help you debug the problem. In some cases your computer might not boot at all and may just give you a beep code.

The problem is that beep codes are different for each BIOS manufacturer. Since there is no standard set of codes, you will need to look up beep codes for your specific BIOS. Below we have listed beep codes for some of the more popular BIOS manufacturers.

AMIBIOS Beep Codes

Beeps Description
1 Memory refresh timer error
2 Parity error in base memory (first 64KB block)
3 Base memory read/write test error
4 Motherboard timer not operational
5 Processor failure. System CPU has failed.
6 8042 Gate A20 test error
7 General exception error
8 Video memory error
9 AMIBIOS ROM checksum error
10 CMOS shutdown register read/write error
11 Cache memory test failed
1-2 Video system failure
1-3 Error in memory above 64K
1-8 Display test failure
Continuous Memory or video error

 

Phoenix Beep Codes

Beeps

Error Message

Description

1-1-2 CPU test failure The CPU is faulty. Replace the CPU
Low 1-1-2 System board select failure The motherboard is having an undetermined fault. Replace the motherboard
1-1-3 CMOS read/write error The real time clock/CMOS is faulty.Replace the CMOS if possible
Low 1-1-3 Extended CMOS RAM failure The extended portion of the CMOS RAM has failed. Replace the CMOS if possible
1-1-4 BIOS ROM checksum error The BIOS ROM has failed. Replace the BIOS or upgrade if possible
1-2-1 PIT failure The programmable interrupt timer has failed. Replace if possible
1-2-2 DMA failure The DMA controller has failed.Replace the IC if possible
1-2-3 DMA read/write failure The DMA controller has failed.Replace the IC if possible
1-3-1 RAM refresh failure The RAM refresh controller has failed
1-3-2 64KB RAM failure The test of the first 64KB RAM has failed to start
1-3-3 First 64KB RAM failure The first RAM IC has failed.Replace the IC if possible
1-3-4 First 64KB logic failure The first RAM control logic has failed
1-4-1 Address line failure The address line to the first 64KB RAM has failed
1-4-2 Parity RAM failure The first RAM IC has failed.Replace if possible
1-4-3 EISA fail-safe timer test Replace the motherboard
1-4-4 EISA NMI port 462 test Replace the motherboard
2-1-1 64KB RAM failure Bit 0; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-2 64KB RAM failure Bit 1; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-3 64KB RAM failure Bit 2; This data bit on the first RAM IC has failed. Replace the IC if possible
2-1-4 64KB RAM failure Bit 3; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-1 64KB RAM failure Bit 4; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-2 64KB RAM failure Bit 5; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-3 64KB RAM failure Bit 6; This data bit on the first RAM IC has failed. Replace the IC if possible
2-2-4 64KB RAM failure Bit 7; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-1 64KB RAM failure Bit 8; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-2 64KB RAM failure Bit 9; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-3 64KB RAM failure Bit 10; This data bit on the first RAM IC has failed. Replace the IC if possible
2-3-4 64KB RAM failure Bit 11; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-1 64KB RAM failure Bit 12; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-2 64KB RAM failure Bit 13; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-3 64KB RAM failure Bit 14; This data bit on the first RAM IC has failed. Replace the IC if possible
2-4-4 64KB RAM failure Bit 15; This data bit on the first RAM IC has failed. Replace the IC if possible
3-1-1 Slave DMA register failure The DMA controller has failed.Replace the controller if possible
3-1-2 Master DMA register failure The DMA controller had failed.Replace the controller if possible
3-1-3 Master interrupt mask register failure The interrupt controller IC has failed
3-1-4 Slave interrupt mask register failure The interrupt controller IC has failed
3-2-2 Interrupt vector error The BIOS was unable to load the interrupt vectors into memory. Replace the motherboard
3-2-3 Reserved
3-2-4 Keyboard controller failure The keyboard controller has failed.Replace the IC if possible
3-3-1 CMOS RAM power bad Replace the CMOS battery or CMOS RAM if possible
3-3-2 CMOS configuration error The CMOS configuration has failed.Restore the configuration or replace the battery if possible
3-3-3 Reserved
3-3-4 Video memory failure There is a problem with the video memory. Replace the video adapter if possible
3-4-1 Video initialization failure There is a problem with the video adapter. Reseat the adapter or replace the adapter if possible
4-2-1 Timer failure The system’s timer IC has failed.Replace the IC if possible
4-2-2 Shutdown failure The CMOS has failed. Replace the CMOS IC if possible
4-2-3 Gate A20 failure The keyboard controller has failed.Replace the IC if possible
4-2-4 Unexpected interrupt in protected mode This is a CPU problem. Replace the CPU and retest
4-3-1 RAM test failure System RAM addressing circuitry is faulty. Replace the motherboard
4-3-3 Interval timer channel 2 failure The system timer IC has failed.Replace the IC if possible
4-3-4 Time of day clock failure The real time clock/CMOS has failed. Replace the CMOS if possible
4-4-1 Serial port failure A error has occurred in the serial port circuitry
4-4-2 Parallel port failure A error has occurred in the parallel port circuitry
4-4-3 Math coprocessor failure The math coprocessor has failed. If possible, replace the MPU

Award Bios Beep Codes

Beeps Description
1-2 Video error has occurred
All other beeps RAM problem

IBM Desktop BIOS Beep Codes

Beeps Description
1 No error
2 Initialization error
1-1 System board error
1-2 Video adapter problem
1-3 VGA adapter problem
3 3270 keyboard error
Continuous Power supply or system board problem

 

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