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
 

2–18 www.hp.com Troubleshooting Guide
Troubleshooting Without Diagnostics
Solving MultiBay Problems
Parallel ATA (PATA) hard 
drive does not perform 
optimally.
You are using the wrong 
cable for the drive type.
Reinstall the Ultra ATA hard drive 
using an 80-conductor cable.
Computer will not start. Hard drive is damaged. Observe if the front panel Power 
LED is blinking RED and if any 
beeps are heard. See Appendix A, 
“POST Error Messages” to 
determine possible causes for the 
blinking red and beep codes.
See the Worldwide Limited 
Warranty for terms and conditions.
Computer seems to be 
locked up.
Program in use has 
stopped responding to 
commands.
Attempt the normal Windows “Shut 
Down” procedure. If this fails, press 
the power button for four or more 
seconds to turn off the power. To 
restart the computer, press the 
power button again.
Solving Hard Drive Problems (Continued)
Problem Cause Solution
Solving MultiBay Problems
Problem Cause Solution
Drive not found. You attempted to hot 
plug a removable 
hard drive that has 
DriveLock security 
enabled. (This feature 
supported on select 
models only.)
Shut down Windows and turn off 
the computer. Insert the drive into 
the MultiBay, if it is not already 
inserted. Turn on the computer.
MultiBay is hidden in 
Computer Setup.
Enter Computer Setup and set 
MultiBay to Device Available in 
Security > Device Security.










