During Operation - HP Workstation User Manual

During operation

Look for blinking LEDs on the workstation. The blinking lights are error codes that will help you
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diagnose the problem. Refer to the Diagnostic lights and audible (beep) codes section in the
Maintenance and Service Guide for your workstation for information about interpreting diagnostic
lights and audible codes.
Press and hold any key. If the system beeps, your keyboard is operating correctly.
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Check all cables for loose or incorrect connections.
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Wake the workstation by pressing any key on the keyboard or the power button. If the system
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remains in suspend mode, shut down the system by pressing and holding the power button for at
least four seconds, and 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, and 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.
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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
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printer, you must install a printer driver.
If you are working on a network, plug another workstation with a different cable into the network
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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
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properly.
If you recently installed new software, uninstall the software and verify if the workstation functions
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properly.
If the monitor connected to a tower, desktop or all-in-one computer is blank:
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Plug the monitor into a different video port on the computer if one is available. Alternatively,
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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.
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Verify that the monitor is turned on and the green monitor light is on.
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Turn up the brightness and contrast controls of the monitor if the monitor is dim.
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If the internal display on an all-in-one computer is blank, open the computer and make sure the
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graphics card is properly installed.
Upgrade the BIOS. A new release of the BIOS might have been released that supports new
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features or fixes your problem.
For more detailed information, see the troubleshooting chapter in the Maintenance and Service
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Guide at http://www.hp.com/support/workstation_manuals.
HP troubleshooting resources and tools
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