BIOS Beep Codes

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Bereich: Hardware
FAQ-Art: Tutorial

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Nach dem Einschalten des Computers leitet das BIOS zunächst einen Hardware-Selbsttest (POST) ein, in dessen Verlauf festgestellt wird, ob alle wichtigen Komponenten funktionsfähig sind.


Im Falle eines Fehlers gibt das BIOS mehrere kurze Pieptöne (Beep Code) aus und bricht den Selbsttest mit einer zusätzlichen Fehlermeldung, wenn möglich, ab. Ein einzelnes Piepen signalisiert für gewöhnlich, dass der Selbsttest erfolgreich war. Anschließend werden die Daten des BIOS-Setups (s.u.) eingelesen und mit den Daten der vorgefundenen Hardware verglichen.

Nachstehend werden auszugsweise Fehler-Codes für unterschiedliche BIOS-Hersteller in Form von Piepton - Fehlermeldung - Fehlerbeschreibung aufgeführt:

AMI

1 short - DRAM refresh failure - The programmable interrupt timer or programmable interrupt controller has probably failed

2 short - Memory parity error - A memory parity error has occurred in the first 64K of RAM. The RAM IC is probably bad

3 short - Base 64K memory failure - A memory failure has occurred in the first 64K of RAM. The RAM IC is probably bad

4 short - System timer failure - The system clock/timer IC has failed or there is a memory error in the first bank of memory

5 short - Processor error - The system CPU has failed

6 short - Gate A20 failure - The keyboard controller IC has failed, which is not allowing Gate A20 to switch the processor to protected mode. Replace the keyboard controller

7 short - Virtual mode processor exception error - The CPU has generated an exception error because of a fault in the CPU or motherboard circuitry

8 short - Display memory read/write error - The system video adapter is missing or defective

9 short - ROM checksum error - The contents of the system BIOS ROM does not match the expected checksum value. The BIOS ROM is probably defective and should be replaced

10 short - CMOS shutdown register read/write error - The shutdown for the CMOS has failed

11 short - Cache error - The L2 cache is faulty

1 long, 2 short - Failure in video system - An error was encountered in the video BIOS ROM, or a horizontal retrace failure has been encountered

1 long, 3 short - Memory test failure - A fault has been detected in memory above 64KB

1 long, 8 short - Display test failure - The video adapter is either missing or defective

2 short - POST Failure - One of the hardware testa have failed

1 long - POST has passed all tests


Award

1 long, 2 short - Video adapter error - Either video adapter is bad or is not seated properly. Also, check to ensure the monitor cable is connected properly.

Repeating (endless loop) - Memory error - Check for improperly seated or missing memory.

1 long, 3 short - No video card or bad video RAM - Reseat or replace the video card.

High frequency beeeps while running - Overheated CPU - Check the CPU fan for proper operation. Check the case for proper air flow.

Repeating High/Low - CPU - Either the CPU is not seated properly or the CPU is damaged. May also be due to excess heat. Check the CPU fan or BIOS settings for proper fan speed.


Phoenix

The beep codes are represented in the number of beeps. E.g. 1-1-2 would mean 1 beep, a pause, 1 beep, a pause, and 2 beeps.

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

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

3-3-4 - 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