System Error Beep Codes [Part 1]

 574210-7123-57POST ABCs

The computer power-on self-test (POST) tests the computer to make sure it meets the necessary system requirements and that all hardware is working properly before starting the remainder of the boot process. If the computer passes the POST the computer will have a single beep (with some computer BIOS manufacturers it may beep twice) as the computer starts and the computer will continue to start normally. However, if the computer fails the POST, the computer will either not beep at all or will generate a beep code, which tells the user the source of the problem.

If you’re receiving an irregular POST or a beep code not mentioned below use the POST troubleshooting steps to determine the failing hardware component.

2

AMI BIOS beep codes

Below are the AMI BIOS Beep codes that can occur. However, because of the wide variety of different computer manufacturers with this BIOS, the beep codes may vary.

Beep Code

Descriptions

1 short

DRAM refresh failure

2 short

Parity circuit failure

3 short

Base 64K RAM failure

4 short

System timer failure

5 short

Process failure

6 short

Keyboard controller Gate A20 error

7 short

Virtual mode exception error

8 short

Display memory Read/Write test failure

9 short

ROM BIOS checksum failure

10 short

CMOS shutdown Read/Write error

11 short

Cache Memory error

1 long, 3 short

Conventional/Extended memory failure

1 long, 8 short

Display/Retrace test failed

Source: Computer Hope

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