Locating Id Labels; Locating Warranty Information; Diagnosis Guidelines; Diagnosis At Startup - HP Z228 Maintenance And Service Manual

Locating ID labels

To assist in troubleshooting, product, serial, and authentication numbers are available on each computer.
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All workstations have a serial number (unique for each workstation) and product number. Have these
numbers available when you contact support.
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The Certificate of Authentication (COA) is used for systems with Windows 7 preinstalled.
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The Genuine Microsoft Label (GML) is used for systems with Windows 8 preinstalled.
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A service label shows the build ID and Feature Byte strings, which are needed for system board
replacement.
In general, these labels can be found on the top, rear, or bottom of the chassis (tower and desktop
configuration). Your computer might look different from the illustration.

Locating warranty information

To locate base warranty information, go to http://www.hp.com/support/warranty-lookuptool.
To locate an existing Care Pack, go to http://www.hp.com/go/lookuptool.
To extend a standard product warranty, go to http://www.hp.com/hps/carepack. HP Care Pack Services offer
upgraded service levels to extend and expand a standard product warranty.

Diagnosis guidelines

If you encounter a problem with the computer, monitor, or software, the following sections provide a list of
general suggestions that help you isolate and focus on the problem before taking further action.

Diagnosis at startup

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Verify that the computer and monitor are plugged into a working electrical outlet.
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Remove all CDs, or USB drive keys from your system before turning it on.
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Verify that the computer is turned on and the blue power light is blue (normal operation) and not red
(error state).
52 Chapter 4 Diagnostics and troubleshooting