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5
Troubleshooting without diagnostics
This chapter provides information on how to identify and correct minor problems, such as USB devices, hard
drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the
computer, see 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, see
Safety and comfort
WARNING!
result in discomfort or serious injury. See the Safety & Comfort Guide at
information on choosing a workspace and creating a safe and comfortable work environment. For more
information, see the Safety & Regulatory Information guide.
Before you call for technical support
If you are having problems with the computer, try the following solutions 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. See
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. See
LEDs and audible codes on page 83
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.
●
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."
See the comprehensive online technical support at http://www.hp.com/support.
●
●
See
Helpful hints on page 47
To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-
solve diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat
feature.
Access the Business Support Center (BSC) at
information, software and drivers, proactive notification, and worldwide community of peers and HP experts.
46
Chapter 5 Troubleshooting without diagnostics
POST error messages and diagnostic front panel LEDs and audible codes on page
Misuse of the computer or failure to establish a safe and comfortable work environment may
in this guide.
Computer Setup (F10) Utility on page 71
POST error messages and diagnostic front panel
for more information.
http://www.hp.com/go/bizsupport
http://www.hp.com/ergo
for the latest online support
83.
for more
for more
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