During operation
●
Look for blinking LEDs on the workstation. The blinking lights are error codes that will help you diagnose
the problem. Refer to the Diagnostic lights and audible (beep) codes section of this document for
information on interpreting diagnostic lights and audible codes.
●
Press and hold any key. If the system beeps, then your keyboard is operating correctly.
●
Check all cables for loose or incorrect connections.
●
Wake the workstation by pressing any key on the keyboard or the power button. If the system remains in
suspend mode, shut down the system by pressing and holding the power button for at least four
seconds, then press the power button again to restart the system. If the system does not shut down,
unplug the power cord, wait a few seconds, then plug it in again. If it does not restart, press the power
button to start the workstation.
●
Reconfigure the workstation after installing a non–plug and play expansion board or other option. Refer
to the Hardware installation problems section of this document for instructions.
●
Be sure that all required device drivers have been installed. For example, if you have connected a printer,
you must install a printer driver.
●
If you are working on a network, plug another workstation with a different cable into the network
connection. There might be a problem with the network plug or cable.
●
If you recently added new hardware, remove the hardware and verify if the workstation functions
properly.
●
If you recently installed new software, uninstall the software and verify if the workstation functions
properly.
●
If the monitor connected to a tower, desktop or all-in-one computer is blank:
◦
Plug the monitor into a different video port on the computer if one is available. Alternatively,
replace the monitor with a monitor that you know is working properly.
◦
Verify that the computer and monitor are plugged into a working electrical outlet.
◦
Verify that the monitor is turned on and the power light is on.
◦
Turn up the brightness and contrast controls of the monitor if the monitor is dim.
●
If the internal display on an all-in-one computer is blank, open the computer and make sure the graphics
card is properly installed.
●
Upgrade the BIOS. A new release of the BIOS might have been released that supports new features or
fixes your problem.
Customer Self-Repair program
Under the Customer Self-Repair program, you can order a replacement part and install the part without onsite
HP technical assistance. Customer self-repair may be required for some components. See
http://www.hp.com/go/selfrepair
for information on the program.
NOTE:
Some components are not eligible for customer self-repair and must be returned to HP for service.
Call HP Support for further instructions before attempting to remove or repair these components.
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Chapter 4 Diagnostics and troubleshooting
