HP B5P07UT B5P07UT#ABA, Z220 F1J90UAABA, Z420 D3J34UT#ABA, B2B94UT B2B94UT#ABA Customer self-repair

●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 green monitor 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

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.

124 Chapter 4 Diagnostics and troubleshooting