HP P Class 450/500/550/600/650/700/750 Reference Manual page 110

Tests and Error Messages
Order in Which the Tests Are Performed
Checkpoint Code
A2h
A4h
A8h
AAh
ACh
AEh
B0h
B2h
B4H
B5H
B6h
B9h
BAh
BBh
BCh
BDh
BEh
BFh
C0h
C1h
C2h
C3h
C4h
C5h
C6h
C7h
110
POST Routine Description
Check key lock
Initialize typematic rate
Erase F2 prompt
Scan for F2 key stroke
Enter SETUP
Clear boot flag
Check for errors
POST done - prepare to boot operating system
One short beep before boot
Terminate QuietBoot (optional)
Check password (optional)
Prepare boot
Initialize DMI parameters
Initialize PnP Option ROMs
Clear parity checkers
Display MultiBoot menu
Clear screen (optional)
Check virus and backup reminders
Try to boot with INT 19
Initialize POST Error Manager (PEM)
Initialize error logging
Initialize error display function
Initialize system error handling
Plug and Play Dual CMOS (optional)
Initialize notebook docking (optional)
Initialize notebook docking late
Chapter 5