| TABLE 1: Beep Codes |
| Number of Beeps | Error Message |
| 1 | DRAM refresh failure |
| 2 | Parity circuit failure |
| 3 | Base 64KB RAM failure |
| 4 | System timer failure |
| 5 | Processor failure |
| 6 | Keyboard controller gate A20 error |
| 7 | Virtual mode exception error |
| 8 | Display memory read/write test failure |
| 9 | ROM-BIOS checksum failure |