Dell OptiPlex 755, Quick Reference Manual

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Quick Reference Guide
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Solving Problems
Dell provides a number of tools to help you if your computer does not
perform as expected. For the latest troubleshooting information available for
your computer, see the Dell Support website at
support.dell.com .
If computer problems occur that require help from Dell, write a detailed
description of the error, beep codes, or diagnostics light patterns, record your
Express Service Code and Service Tag below, and then contact Dell from the
same location as your computer. For information on contacting Dell, see your
online
User’s Guide .
For an example of the Express Service Code and Service Tag, see "Finding
Information" in your computer
User’s Guide .
Express Service Code:___________________________
Service Tag:___________________________
Dell Diagnostics
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions located in the Product Information Guide .
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in this
section and run the Dell Diagnostics before you contact Dell for technical
assistance.
It is recommended that you print these procedures before you begin.
NOTICE:
The Dell Diagnostics works only on Dell™ computers.
Enter system setup (see "Entering System Setup" in the User’s Guide ), review
your computer’s configuration information, and ensure that the device you
want to test displays in system setup and is active.
RTCRST The real-time clock has not been
reset.
The real-time clock is being reset
(jumpered temporarily).
jumpered unjumpered
Jumper Setting Description