BIOS Beep Identification

When a computer is first turned on, the hardware runs a Power-On Self Test (POST). If errors are encountered during this POST test, they are usually displayed via an audio beep. With this audio code in hand, we can determine what part of the system is having problems and find a solution.

The pattern of beeps will give us an indication of the actual problem. Its a distress signal from the computer in a morse code like pattern.

For AWARD BIOS
Pattern	Meaning
1 short beep	System normal
2 short beeps	CMOS Error
1 long beep and 1 short beep	Memory error
1 long beep and 2 short beeps	Graphic card error
1 long beep and 3 short beeps	AGP error
1 long beep and 9 short beeps	Memory Error
Continuous long beep	Memory not correctly installed
Continuous short beep	Power supply unit failed
For AMI BIOS
Pattern	Meaning
1 short beep	System normal
2 short beeps	Memory parity check error
3 short beeps	basic memory 64K address check error
4 short beeps	Real Time Clock malfunction
4 short beeps	Real Time Clock malfunction
5 short beeps	CPU error
6 short beeps	Keyboard error
7 short beeps	CPU interruption error
8 short beeps	Graphic card error
9 short beeps	Memory error
10 short beeps	CMOS error
11 short beeps	CPU cache memory malfunction

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