no beep - Power Supply, 1 short beep - POST passed, 1 long beep, 1 short beep - Bad Motherboard, 1 long beep, 2 short beep - Video(EGA) Display Circuitry, 1 long beep, 3 short beep - Video (Mono/CGA Display Circuitry), 1 long beep, 8 short beep - Bad Video Card, 3 short beep - Bad RAM, 3 long beep - Keyboard or Keyboard card error, 7 short beep - Bad CPU,

CompTIA A+ Simulation - PC beep codes

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