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Troubleshooting and Diagnostics
Service Manual
Beep Codes
POST Description
3-4-4-4
Check virus and backup reminders
4-1-1-1
Try to boot with INT 19
4-1-1-2
Initialize POST Error Manager (PEM)
4-1-1-3
Initialize error logging
4-1-1-4
Initialize error display function
4-1-2-1
Initialize system error handler
4-1-2-2
PnPnd dual CMOS (optional)
4-1-2-3
Initialize note dock (optional)
4-1-2-4
Initialize note dock late
4-1-3-1
Force check (optional)
4-1-3-2
Extended checksum (optional)
4-1-3-3
Redirect Int 15h to enable remote keyboard
4-1-3-4
Redirect Int 13h to Memory Technologies Devices such as ROM, RAM, PCMCIA,
and serial disk
4-1-4-1
Redirect Int 10h to enable remote serial video
4-1-4-2
Re-map I/O and memory for PCMCIA
4-1-4-3
Initialize digitizer and display message
4-2-1-3
Unknown interrupt
4-3-1-1
Initialize the chipset
4-3-1-2
Initialize the bridge
4-3-1-3
Initialize the CPU
4-3-1-4
Initialize system timer
4-3-2-1
Initialize system I/O
4-3-2-2
Check force recovery boot
4-3-2-3
Checksum BIOS ROM
4-3-2-4
Go to BIOS
4-3-3-1
Set Huge Segment
4-3-3-2
Initialize Multi Processor
4-3-3-3
Initialize OEM special code
4-3-3-4
Initialize PIC and DMA
4-3-4-1
Initialize Memory type
4-3-4-2
Initialize Memory size
4-3-4-3
Shadow Boot Block
4-3-4-4
System memory test
4-4-1-1
Initialize interrupt vectors
4-4-1-2
Initialize Run Time Clock
4-4-1-3
Initialize video
4-4-1-4
Initialize System Management Manager
