Beep Codes

POST Description

3-4-3-2

Prepare Boot

3-4-3-3

Initialize SMBIOS

3-4-3-4

Initialize PnP Option ROMs

3-4-4-1

Clear parity checkers

3-4-4-2

Display MultiBoot menu

3-4-4-3

Clear screen (optional)

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

4-4-2-1

Output one beep

4-4-2-2

Clear Huge Segment

4-4-2-3

Boot to Mini DOS

4-4-2-4

Boot to Full DOS

1 long,

Improper video configuration (reprogram EEPROM) or external ROM checksum failure

2 short

 

Service Manual

Troubleshooting and Diagnostics

3-23