post code master - the site for BIOS, POST & BEEP code information

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Intel NX440LX AL440LX DK440LX Beep Codes

  • 1 One short beep before boot
  • 1-2 Search for option ROMs
  • 1-2-2-3 BIOS ROM checksum
  • 1-3-1-1 Test DRAM refresh
  • 1-3-1-3 Test 8742 keyboard controller
  • 1-3-4-1 RAM failure on address line xxxx*
  • 1-3-4-3 RAM failure on data bits xxxx* of low byte of memory bus
  • 1-4-1-1 RAM failure on data bits xxxx* of high byte of memory bus
  • 2-1-2-3 Check ROM copyright notice
  • 2-2-3-1 Test for unexpected interrupts)
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