| Beep Code | Error Description | | Beep Code | Error Description |
| 1 short | Low level processor verification test failed | | 1 long | DMA channel 1 test failed |
| 2 short | Clearing keyboard controller buffers failed | | 1 long 1 short | DMA page register test failed |
| 3 short | Keyboard controller reset failed | | 1 long 2 short | Keyboard controller interface test failed |
| 4 short | Low level keyboard controller interface test | | 1 long 3 short | Memory refresh toggle test failed |
| 5 short | Reading data from keyboard controller failed | | 1 long 4 short | First 64 KB memory test failed |
| 6 short | System board support chip initialization failed | | 1 long 5 short | Setup interrupt vector table failed |
| 7 short | Processor register read/write verify test failed | | 1 long 6 short | Video initialization failed |
| 8 short | CMOS timer initialization failed | | 1 long 7 short | Video memory test failed |
| 9 short | Initialize primary video | | 10 short | 8254 timer channel 0 test failed |
| 11 short | 8254 timer channel 1 test failed | | 12 short | 8254 timer channel 2 test failed |
| 13 short | CMOS power-on and time test failed | | 14 short | CMOS shutdown byte test failed |
| 15 short | DMA channel 0 test failed | | | |