Troubleshooting; Safety And Comfort; Before You Call For Technical Support - HP Compaq dx2390 Troubleshooting Manual

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Troubleshooting

Safety and Comfort

WARNING!
may result in discomfort or serious injury. Refer to the Safety & Comfort Guide available on the Web
site at http://www.hp.com/ergo
comfortable work environment.
WARNING!
Disconnect power to the equipment before removing the enclosure.
Replace and secure the enclosure before re-energizing the equipment.

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.
●
Listen for a series of beeps from the computer. The beeps are error codes that will help you
diagnose the problem. Refer to
codes.
●
If the screen is blank, plug the monitor into a different video port on the computer if one is available.
Or, change out 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.
●
Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When
booting the operating system, use "Last Known Configuration."
●
Refer to the comprehensive online technical support at http://www.hp.com/support.
●
Refer to
ENWW
Misuse of the computer or failure to establish a safe and comfortable work environment
for more information on choosing a workspace and creating a safe and
Energized and moving parts inside.
Helpful Hints on page 8
Interpreting POST Audible Codes on page 14
in this guide for more general suggestions.
to interpret the
Safety and Comfort 7