HP dx2400 manual Helpful Hints

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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 HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.

Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support information, software and drivers, proactive notification, and worldwide community of peers and HP experts.

If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your service call is handled properly:

Be in front of your computer when you call.

Write down the computer serial number and product ID number, and the monitor serial number before calling.

Spend time troubleshooting the problem with the service technician.

Remove any hardware that was recently added to your system.

Remove any software that was recently installed.

NOTE: For sales information and warranty upgrades (Care Packs), call your local authorized service provider or dealer.

Helpful Hints

If you encounter problems with the computer, monitor, or software, see the following list of general suggestions before taking further action:

Check that the computer and monitor are plugged into a working electrical outlet.

Check to see that the voltage select switch (some models) is set to the appropriate voltage for your region (115V or 230V).

Check to see that the computer is turned on and the power light is on.

Check to see that the monitor is turned on and the green monitor light is on.

Turn up the brightness and contrast controls of the monitor if the monitor is dim.

Press and hold any key. If the system beeps, then the keyboard should be operating correctly.

Check all cable connections for loose connections or incorrect connections.

Wake the computer by pressing any key on the keyboard or pressing the power button. If the system remains in suspend mode for more than four seconds, shut down the computer by pressing and holding the power button for at least four seconds then press the power button again to restart the computer. If the system will not shut down, unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if automatic start on power loss is set in Computer Setup. If it does not restart, press the power button to start the computer.

Reconfigure your computer after installing a non–plug and play expansion board or other option.

Be sure that all the needed device drivers have been installed. For example, if you are using a printer, you need a driver for that model printer.

Remove all bootable media (diskette, CD, or USB device) from the system before turning it on.

8 Chapter 2 Troubleshooting

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Contents HP Compaq Business PCs Troubleshooting Guide About This Book Iv About This Book Table of contents Enww HP Insight Diagnostics Accessing HP Insight DiagnosticsSurvey Tab Test TabSelect the Test Mode Interactive or Unattended Status TabHelp Tab Saving and Printing Information in HP Insight DiagnosticsLog Tab Downloading the Latest Version of HP Insight Diagnostics Protecting the SoftwareHP Backup and Recovery Manager Safety and Comfort Before You Call for Technical SupportHelpful Hints Helpful Hints Cause Solution Solving General ProblemsComputer will not turn on Cause Solution Computer date and time display is incorrect Cause Solution Poor performance is experienced Cause SolutionBlank screen no video Cause Solution Computer is beeping and will not start Cause SolutionSolving Hardware Installation Problems Computer will not start Cause SolutionInterpreting Post Audible Codes Beeps Meaning Recommended ActionContacting Customer Support
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