When you turn on your PC, there's a beep code that usually heard. Each beep code has a meaning.
If your PC run normal, you just hear once short beep only.
If you hear not once short beep, that mean your PC has the problem(s)
Once long beep = harddisk problem
Once long beep and once short beep = mainboard problem
Once long beep and twice short beeps = VGA problem
Three times long beep = keyboard problem
Short beep continues = power supply problem
Long beep continues = memory problem
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