Beep Codes*

POST Description

2-1-4-3

Display BIOS copyright notice.

2-1-4-4

Initialize MultiBoot.

2-2-1-1

Display CPU type and speed.

2-2-1-2

Initialize EISA board.

2-2-1-3

Test keyboard.

2-2-2-1

Set key click if enabled.

2-2-2-2

Enable USB devices.

2-2-3-1

Test for unexpected interrupts.

2-2-3-2

Initialize POST display service.

2-2-3-3

Display prompt "Press F2 to enter SETUP".

2-2-3-4

Disable CPU cache.

2-2-4-1

Test RAM between 512 and 640 kB.

2-3-1-1

Test extended memory.

2-3-1-3

Test extended memory address lines.

2-3-2-1

Jump to UserPatch1.

2-3-2-3

Configure advanced cache registers.

2-3-2-4

Initialize Multi Processor APIC.

2-3-3-1

Enable external and CPU caches.

2-3-3-2

Set up System Management Mode (SMM) area.

2-3-3-3

Display external L2 cache size.

2-3-3-4

Load custom defaults (optional).

2-3-4-1

Display shadow-area message.

2-3-4-3

Display possible high address for UMB recovery.

2-4-1-1

Display error messages.

2-4-1-3

Check for configuration errors.

2-4-2-3

Check for keyboard errors.

2-4-4-1

Set up hardware interrupt vectors.

2-4-4-2

Initialize Intelligent System Monitoring.

2-4-4-3

Initialize coprocessor if present.

3-1-1-1

Disable onboard Super I/O ports and IRQs.

3-1-1-2

Late POST device initialization.

3-1-1-3

Detect and install external RS232 ports.

3-1-1-4

Configure non-MCD IDE controllers.

3-1-2-1

Detect and install external parallel ports.

3-1-2-2

Initialize PC-compatible PnP ISA devices.

3-1-2-3

Re-initialize onboard I/O ports.

3-1-2-4

Configure Motherboard Configurable Devices (optional).

3-1-3-1

Initialize BIOS Data Area.

3-1-3-2

Enable Non-Maskable Interrupts (NMIs).

3-1-3-3

Initialize Extended BIOS Data Area.

3-1-3-4

Test and initialize PS/2 mouse.

3-1-4-1

Initialize floppy controller.

3-1-4-4

Determine number of ATA drives (optional).

3-2-1-1

Initialize hard-disk controllers.

3-2-1-2

Initialize local-bus hard-disk controllers.

3-2-1-3

Jump to UserPatch2.

3-2-1-4

Build MPTABLE for multi-processor boards.

3-2-2-2

Install CD-ROM for boot.

3-2-2-3

Clear huge ES segment register.

3-2-2-4

Fix up Multi Processor table.

3-2-3-2

Check for SMART Drive (optional).

3-2-3-3

Shadow option ROMs.

3-2-4-1

Set up Power Management.

3-2-4-2

Initialize security engine (optional).

3-2-4-3

Enable hardware interrupts.

3-2-4-4

Determine number of ATA and SCSI drives.

3-3-1-1

Set time of day.

3-3-1-3

Check key lock.

3-3-2-1

Initialize typematic rate.

3-3-3-1

Erase F2 prompt.

3-3-3-3

Scan for F2 keystroke.

3-3-4-1

Enter SETUP.

3-3-4-3

Clear Boot flag.

3-4-1-1

Check for errors.

3-4-1-2

Inform RomPilot about the end of POST.

3-4-1-3

POST done - prepare to boot OS.

3-4-2-2

Terminate QuietBoot (optional).

3-4-2-3

Check password (optional).

3-4-2-4

Initialize ACPI BIOS.

3-4-3-2

Prepare Boot.

3-4-3-3

Initialize SMBIOS.

3-4-3-4

Initialize PnP Option ROMs.

Service Manual

Troubleshooting and Diagnostics

3-21