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3-22 Troubleshooting and Diagnostics Service Manual
Beep Codes POST Description
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