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6 Beeps: Keyboard controller / gate A20 failure
Explanation: The keyboard controller is a chip on the motherboard that communicates with your keyboard. It also controls the A20 gate that provides access to the high memory area (HMA). This component is indicating a failure.
Diagnosis: This is usually a problem with either the keyboard or the motherboard.
Recommendation:
- Troubleshooting the keyboard is relatively easy; try that first.
- Troubleshoot the keyboard controller.
- Troubleshoot as a motherboard failure.
Next: 7 Beeps: Virtual mode exception error
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