Locating ID labels
To assist in troubleshooting, product, serial, and authentication numbers are available on each
computer.
●
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 Windows 7-preinstalled systems only.
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The Genuine Microsoft Label (GML) is used for Windows 8-preinstalled systems only.
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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 in the top, rear, or bottom of the chassis (tower and desktop
configuration) (your computer might look different).
Figure 8-1 Tower and desktop label locations
Locating warranty information
To locate base warranty information, see http://www.hp.com/support/warranty-lookuptool.
To locate an existing Care Pack, see
http://www.hp.com/go/lookuptool.
To extend a standard product warranty, visit
http://www.hp.com/hps/carepack. HP Care Pack
Services offer upgraded service levels to extend and expand a standard product warranty.
HP troubleshooting resources and tools
This section provides information on HP Support Assistant (HPSA), online support, and helpful hints
for troubleshooting.
HP Support Assistant (HPSA)
HPSA, which is available on select workstations running Windows 7, helps you maintain workstation
performance and resolve problems. HPSA provides automated updates, onboard diagnostics,
product information, and guided assistance to help maintain optimum workstation performance. To
access HPSA, click Start > All Programs > HP Help and Support > HP Support Assistant.
50 Chapter 8 Diagnostics and Minor Troubleshooting
