Generic Beep Codes

Your computer may make some beeping sounds when you turn it on. Use the table below as a general guide as to what events each pattern of beeps represents.

Beep Pattern Description of Problem
One beep Computer POSTed fine
Two beeps POST/CMOS Error
One long beep, one short beep Motherboard Problem
One long beep, two short beeps Video problem
One long beep, three short beeps Video problem
Three long beeps Keyboard error
Repeated long beeps Memory error
Continuous Hi-Lo Beeps CPU overheating

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