Troubleshooting Guide
Table Of Contents
- Contents
 - Computer Diagnostic Features
 - Troubleshooting Without Diagnostics
- Safety and Comfort
 - Before You Call for Technical Support
 - Helpful Hints
 - Solving General Problems
 - Solving Power Supply Problems
 - Solving Diskette Problems
 - Solving Hard Drive Problems
 - Solving MultiBay Problems
 - Solving Display Problems
 - Solving Audio Problems
 - Solving Printer Problems
 - Solving Keyboard and Mouse Problems
 - Solving Hardware Installation Problems
 - Solving Network Problems
 - Solving Memory Problems
 - Solving Processor Problems
 - Solving CD-ROM and DVD Problems
 - Solving Drive Key Problems
 - Solving Internet Access Problems
 - Solving Software Problems
 - Contacting Customer Support
 
 - POST Error Messages
 - Password Security and Resetting CMOS
 - Drive Protection System (DPS)
 - Setting up Analog/Digital Audio Output
 - Index
 

Troubleshooting Guide www.hp.com A–1
A
POST Error Messages
This appendix lists the error codes, error messages, and the various 
indicator light and audible sequences that you may encounter during 
Power-On Self-Test (POST) or computer restart, the probable source 
of the problem, and steps you can take to resolve the error condition.
POST Message Disabled suppresses most system messages during 
POST, such as memory count and non-error text messages. If a POST 
error occurs, the screen will display the error message. To manually 
switch to the POST Messages Enabled mode during POST, press any 
key (except 
F10 or F12). The default mode is POST Message 
Disabled.
The speed at which the computer loads the operating system and the 
extent to which it is tested are determined by the POST mode 
selection.
Quick Boot is a fast startup process that does not run all of the system 
level tests, such as the memory test. Full Boot runs all of the 
ROM-based system tests and takes longer to complete.
Full Boot may also be enabled to run every 1 to 30 days on a regularly 
scheduled basis. To establish the schedule, reconfigure the computer 
to the Full Boot Every x Days mode, using Computer Setup.
✎
For more information on Computer Setup, see the Computer Setup 
(F10) Utility Guide on the Documentation CD.










