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Mylex Corporation Beep Codes

  • 1 long Always a Long Beep to Signify the Start of Beep Decoding
  • 2 long Video Card Bad or No Video Card
  • 1 long, 1 short, 1 long Keyboard Controller Error
  • 1 long, 2 short, 1 long Keyboard Error
  • 1 long, 3 short, 1 long Programmable Interrupt Controller (8259-1) Error
  • 1 long, 4 short, 1 long Programmable Interrupt Controller (8259-1) Error
  • 1 long, 5 short, 1 long DMA Page Register Error
  • 1 long, 6 short, 1 long RAM Refresh Error
  • 1 long, 7 short, 1 long RAM Data Test Error
  • 1 long, 8 short, 1 long RAM Parity Error
  • 1 long, 9 short, 1 long DMA Controller 1 Error
  • 1 long, 10 short, 1 long CMOS RAM Failure
  • 1 long, 11 short, 1 long DMA Controller 2 Error
  • 1 long, 12 short, 1 long CMOS RAM Battery Failure
  • 1 long, 13 short, 1 long CMOS Checksum Failed
  • 1 long, 14 short, 1 long BIOS ROM Checksum Failed
  • More than 2 long beeps Indicates Multiple Failures
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