HP Z1 User's Guide download pdf (Page 58)

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If you recently installed new software, uninstall the software and verify if the workstation functions

properly.

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If the internal display panel on an all-in-one computer is blank, open the computer and ensure that

both ends of the cable between the system board and the internal display panel are connected. If

using a graphics card, verify that the graphics card is properly installed.

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Upgrade the BIOS. A new release of the BIOS might have been released that supports new

features or fixes your problem.

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For more detailed information, see the troubleshooting chapter in the Maintenance and Service

Guide at

http://www.hp.com/support/workstation_manuals.

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 might 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.

Other troubleshooting options

The following additional troubleshooting techniques and tools are located in the Maintenance and

Service Guide at

http://www.hp.com/support/workstation_manuals:

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POST Error Codes

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Diagnostic LEDs and audible beep codes

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Troubleshooting scenarios and solutions

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HP Vision Field Diagnostics

50 Chapter 8 Diagnostics and Minor Troubleshooting

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HP Z1 User's Guide Page 58