Appendix C Troubleshooting Without Diagnostics; Safety And Comfort; Before You Call For Technical Support - HP Compaq Pro 4300 Maintenance And Service Manual

C Troubleshooting Without Diagnostics
This chapter provides information on how to identify and correct minor problems, such as diskette
drive, hard drive, optical drive, graphics, audio, memory, and software problems. If you encounter
problems with the computer, refer to the tables in this chapter for probable causes and recommended
solutions.
NOTE: For information on specific error messages that may appear on the screen during Power-On
Self-Test (POST) at startup, refer to

Safety and Comfort

WARNING!
may result in discomfort or serious injury. Refer to the Safety & Comfort Guide at
ergo for more information on choosing a workspace and creating a safe and comfortable work
environment. This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. For more information, refer to the Regulatory, Safety
and Environmental Notices guide.

Before You Call for Technical Support

If you are having problems with the computer, try the appropriate solutions below to try to isolate the
exact problem before calling for technical support.
●
Run the HP diagnostic tool.
●
Run the hard drive self-test in Computer Setup. Refer to the Computer Setup (F10) Utility Guide
for more information.
●
Check the Power LED on the front of the computer to see if it is flashing red. The flashing lights
are error codes that will help you diagnose the problem. Refer to
on page 92
●
If the screen is blank, plug the monitor into a different video port on the computer if one is
available. Or, replace the monitor with a monitor that you know is functioning properly.
●
If you are working on a network, plug another computer with a different cable into the network
connection. There may be a problem with the network plug or cable.
●
If you recently added new hardware, remove the hardware and see if the computer functions
properly.
●
If you recently installed new software, uninstall the software and see if the computer functions
properly.
96

Appendix C Troubleshooting Without Diagnostics

POST Error Messages on page
Misuse of the computer or failure to establish a safe and comfortable work environment
for more information.
92.
http://www.hp.com/
POST Error Messages