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)