Customer Self Repair; Blink Or Beep Codes: Interpreting Post Diagnostic Leds And Audible Codes; Basic Troubleshooting; Hp Support - HP Z8 G4 User Manual

Upgrade the BIOS. A new release of the BIOS might have been released that supports new features or
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fixes your problem.
For more detailed information, see the troubleshooting chapter in the Maintenance and Service Guide at
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http://www.hp.com/support.

Customer Self Repair

Under the Customer Self Repair programs, you can order a replacement part and install the part without on-
site HP technical assistance. Customer Self Repair might be required for some components. For more
information, go to
NOTE: Some components are not eligible for Customer Self Repair and must be returned to HP for service.
Call support for further instructions before attempting to remove or repair these components.

Blink or beep codes: interpreting POST diagnostic LEDs and audible codes

If the power LED on the computer is flashing or if you hear beeps, see the Maintenance and Service Guide
(English only) for interpretation and recommended action.

Basic troubleshooting

WARNING!
board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect
the power cord from the wall outlet and allow the internal system components to cool before you touch them.
If you are having problems with the computer, try the appropriate solutions as described in the previous
sections and summarized below to try to isolate the exact problem before calling for technical support.
If the screen is blank, plug the monitor into a different video port on the computer if one is available. Or,
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replace the monitor with a monitor that you know is functioning properly.
If you are working on a network:
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Use a different network cable to connect your computer to the network.
–
Connect a different computer with a different cable to the network.
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If your problem is not resolved, the network jack on your computer or the network wall jack might be
faulty.
If you recently added new hardware, remove the hardware.
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If you recently installed new software, uninstall the software.
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If the computer will turn on but will not boot into the operating system, run the "pre-boot" diagnostics
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utility, HP PC Hardware Diagnostics. See
If the computer will boot into the operating system and Internet access is available, you may access HP
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Instant Support Professional Edition at http://www.hp.com/go/ispe.

HP Support

Online support

Online support resources include web-based troubleshooting tools, technical knowledge databases, driver
and patch downloads, online communities, and product change notification services.
The following websites are also available to you:
http://www.hp.com/go/selfrepair
When the computer is plugged into an AC power source, voltage is always applied to the system
and select your product.
Using HP PC Hardware Diagnostics (UEFI) on page 36.
If you encounter issues 33