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Q:   2 short beeps. My original IBM-PC beeps twice while booting. What does that mean?
A:

Your PC encountered an POST-Error. The error code is shown on the screen and should be one of those below:

  • 100 - 199 System Board
  • 200 - 299 Memory
  • 300 - 399 Keyboard
  • 400 - 499 Monochrome Display
  • 500 - 599 Color/Graphics Display
  • 600 - 699 Floppy-disk drive and/or Adapter
  • 700 - 799 Math Coprocessor
  • 900 - 999 Parallel Printer Port
  • 1000 - 1099 Alternate Printer Adapter
  • 1100 - 1299 Asynchronous Communication Device, Adapter, or Port
  • 1300 - 1399 Game Port
  • 1400 - 1499 Color/Graphics Printer
  • 1500 - 1599 Synchronous Communication Device, Adapter, or Port
  • 1700 - 1799 Hard Drive and/or Adapter
  • 1800 - 1899 Expansion Unit (XT)
  • 2000 - 2199 Bisynchronous Communication Adapter
  • 2400 - 2599 EGA system-board Video (MCA)
  • 3000 - 3199 LAN Adapter
  • 4800 - 4999 Internal Modem
  • 7000 - 7099 Phoenix BIOS Chips
  • 7300 - 7399 3.5" Disk Drive
  • 8900 - 8999 MIDI Adapter
  • 11200 - 11299 SCSI Adapter
  • 21000 - 21099 SCSI Fixed Disk and Controller
  • 21500 - 21599 SCSI CD-ROM System

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