Beep Sounds
When the computer is turned on in-built program will get execute that is power-on self-test (POST). To ensure that all hardware is working properly before Operating System load. Computer generates a single beep (with some computer BIOS manufacturers it may beep twice) when it start up. However, if any malfunction identified means, the computer will either not beep at all or will generate a beep code to alert user to find the problem source.
AMI BIOS beep sounds
| Beep Code | Problem Source |
| 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 |
AWARD BIOS beep sounds
| Beep Code | Problem Source |
| 1 long 2 short | Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information |
| Any other beep(s) | RAM problem |
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