Locating Id Labels; Locating Warranty Information; Diagnosis Guidelines; Diagnosis At Startup - HP Z240 Maintenance And Service Manual

For a listing of all worldwide support phone numbers, go to
region. Under Contact HP, select All HP Contacts. Follow the instructions to locate the appropriate phone
number.

Locating ID labels

To assist in troubleshooting, identification labels are available on each workstation.
● All workstations have a serial number (unique for each workstation) and product number. Have these
numbers available when you contact support.
● The Certificate of Authentication (COA) is used for Windows 7-preinstalled systems only.
● A service label shows the build ID and Feature Byte strings, which are needed for system board
replacement.
NOTE: Your workstation may look slightly different from the illustration in this section.

Locating warranty information

To locate 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

● Verify that the computer and monitor are plugged into a working electrical outlet.
● Remove all CDs, or USB drive keys from your system before turning it on.
http://www.hp.com/support and select your
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