Troubleshooting Checklist - HP Z1 Maintenance And Service Manual

Troubleshooting checklist

Before running diagnostic utilities, use the following checklist to find possible solutions for computer or
software problems.
Is the computer connected to a functional AC power outlet?
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Is the computer powered on?
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Is the blue power light illuminated?
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If the internal display is dim, adjust the internal display brightness and contrast controls.
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Press the Caps Lock key several times. If the Caps Lock LED toggles on and off, the keyboard is
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operating correctly.
Check cables for loose or improper connections.
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After installing a non-plug and play (PnP) expansion board or other option (such as a diskette
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drive), reconfigure the computer.
Are all necessary device drivers installed?
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Have all printer drivers been installed for each application?
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Have you removed CDs and USB drive keys before powering on the computer?
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Are you running the latest version of BIOS, drivers, and software?
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58 Chapter 4 Diagnostics and troubleshooting