P55 Motherboard Code Error Messages
Sunday, November 8th, 2009
This section provides the P55 Motherboard, POST Codes during system boot up. On board LED Codes, LED Post Codes, Error Messages. Diagnostic code display.
03 – Initialize BIOS.
04 – Check Battery Power and CMOS
05 – Initialize interrupt controlling hardware/vector table
06 – Initialize system timer
07 – Fixes CPU POST interface calling pointer
08 – Primary initialization of CPU
C0 – Secondary initialization of CPU
C1 – Set up boot strap processor information
C2 – Set up boot strap processor for POST
C5 – Enumerate and set up application processors
C6 – Re-enable cache for boot strap processor
C7 – Early CPU initialization exit
0A – Initialize keyboard controller
0B – Detect Mouse
0C – Detect Keyboard
0E – Test input devices
13 – Early POST initialization of chipset registers
20 – Relocate System Management interrupt vector
24 – Uncompress and initialize BIOS module
2A – Initialize devices primary
2C – Initialize devices secondary
2E – Initialize output devices
31 – Allocate memory for ADM module
33 – Initialize silent boot module
37 – Display sign-on message
38 – Initialize USB controller
39 – Initialize DMAC-1 & DMAC-2
3A – Initialize real time clock
3B – Test system memory
3C – Initialization of chipset registers
40 – Detect coprocessor
52 – Update CMOS memory size
60 – Initialize NUM-LOCK
75 – Initialize Int-13
78 – Initialize IPL devices
7C – Generate and write contents of ESCD
84 – Log errors encountered
85 – Display errors, if no display check monitor/video card
87 – Execute BIOS setup if needed or requested
8C – Late POST initialization of chipset registers
8D – Build ACPI tables
8E – Program peripheral parameters
90 – Initialize system management interrupt
A1 – Prepare for system boot
A2 – Initialize IRQ routing table
A4 – Display boot option popup
A7 – Display system configuration screen
A9 – Wait for user input at configuration display
AA – Uninstall POST vector
AB – Prepare BBS for Int 19 boot
AC – End of POST initialization
B1 – Save system context for ACPI
00 – Pass control to OS (can vary) Show CPU Temp (if enabled)
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