| Beeps | Error Message | Description |
| 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 |
| 1-2-1 | PIT failure | The programmable interrupt timer has failed. Replace if possible |
| 1-2-2 | DMA failure | The DMA controller has failed. Replace the IC if possible |
| 1-2-3 | DMA read/write failure | The DMA controller has failed. Replace the IC if possible |
| 1-3-1 | RAM refresh failure | The RAM refresh controller has failed |
| 1-3-2 | 64KB RAM failure | The test of the first 64KB RAM has failed to start |
| 1-3-3 | First 64KB RAM failure | The first RAM IC has failed. Replace the IC if possible |
| 1-3-4 | First 64KB logic failure | The first RAM control logic has failed |
| 1-4-1 | Address line failure | The address line to the first 64KB RAM has failed |
| 1-4-2 | Parity RAM failure | The first RAM IC has failed. Replace if possible |
| 1-4-3 | EISA fail-safe timer test | Replace the motherboard |
| 1-4-4 | EISA NMI port 462 test | Replace the motherboard |
| 2-1-1 | 64KB RAM failure | Bit 0; This data bit on the first RAM IC has failed.
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| 2-1-2 | 64KB RAM failure | Bit 1; This data bit on the first RAM IC has failed.
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| 2-1-3 | 64KB RAM failure | Bit 2; This data bit on the first RAM IC has failed.
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| 2-1-4 | 64KB RAM failure | Bit 3; This data bit on the first RAM IC has failed.
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| 2-2-1 | 64KB RAM failure | Bit 4; This data bit on the first RAM IC has failed.
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| 2-2-2 | 64KB RAM failure | Bit 5; This data bit on the first RAM IC has failed.
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| 2-2-3 | 64KB RAM failure | Bit 6; This data bit on the first RAM IC has failed.
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| 2-2-4 | 64KB RAM failure | Bit 7; This data bit on the first RAM IC has failed.
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| 2-3-1 | 64KB RAM failure | Bit 8; This data bit on the first RAM IC has failed.
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| 2-3-2 | 64KB RAM failure | Bit 9; This data bit on the first RAM IC has failed.
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| 2-3-3 | 64KB RAM failure | Bit 10; This data bit on the first RAM IC has failed.
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| 2-3-4 | 64KB RAM failure | Bit 11; This data bit on the first RAM IC has failed.
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| 2-4-1 | 64KB RAM failure | Bit 12; This data bit on the first RAM IC has failed.
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| 2-4-2 | 64KB RAM failure | Bit 13; This data bit on the first RAM IC has failed.
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| 2-4-3 | 64KB RAM failure | Bit 14; This data bit on the first RAM IC has failed.
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| 2-4-4 | 64KB RAM failure | Bit 15; This data bit on the first RAM IC has failed.
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| 3-1-1 | Slave DMA register failure | The DMA controller has failed. Replace the controller if possible |
| 3-1-2 | Master DMA register failure | The DMA controller had failed. Replace the controller if possible |
| 3-1-3 | Master interrupt mask register failure | The interrupt controller IC has failed |
| 3-1-4 | Slave interrupt mask register failure | The interrupt controller IC has failed |
| 3-2-2 | Interrupt vector error | The BIOS was unable to load the interrupt vectors into memory. Replace the motherboard |
| 3-2-3 | Reserved | |
| 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
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| 3-3-3 | Reserved | |
| 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
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| 4-2-1 | Timer failure | The system’s timer IC has failed.
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| 4-2-2 | Shutdown failure | The CMOS has failed. Replace the CMOS IC if possible |
| 4-2-3 | Gate A20 failure | The keyboard controller has failed. Replace the IC if possible |
| 4-2-4 | Unexpected interrupt in protected mode | This is a CPU problem. Replace the CPU and retest |
| 4-3-1 | RAM test failure | System RAM addressing circuitry is faulty. Replace the motherboard |
| 4-3-3 | Interval timer channel 2 failure | The system timer IC has failed. Replace the IC if possible |
| 4-3-4 | Time of day clock failure | The real time clock/CMOS has failed. Replace the CMOS if possible |
| 4-4-1 | Serial port failure | A error has occurred in the serial port circuitry |
| 4-4-2 | Parallel port failure | A error has occurred in the parallel port circuitry |
| 4-4-3 | Math coprocessor failure | The math coprocessor has failed. If possible, replace the MPU |
