Beep codes – Dell OptiPlex 745 User Manual

Page 52

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52

Quick Reference Guide

Beep Codes

Your computer might emit a series of beeps during start-up if the monitor cannot display errors or
problems. This series of beeps, called a beep code, identifies a problem. One possible beep code
(code 1 3-1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you
that the computer encountered a memory problem.

No memory modules are detected.

• If you have one memory module

installed, reinstall it and restart the
computer. For information on
reinstalling memory modules, see your
online

User’s Guide.

• If you have two or more memory

modules installed, remove the modules,
reinstall one module, and then restart
the computer. If the computer starts
normally, reinstall an additional module.
Continue until you have identified a
faulty module or reinstalled all modules
without error.

• If available, install properly working

memory of the same type into your
computer.

• If the problem persists, contact Dell. For

information on contacting Dell, see your
online

User’s Guide.

Memory modules are detected, but a
memory configuration or compatibility
error exists.

• Ensure that no special memory

module/memory connector placement
requirements ex
ist.

• Verify that the memory modules that

you are installing are compatible with
your computer.

• If the problem persists, contact Dell. For

information on contacting Dell, see your
online

User’s Guide.

A failure has occurred.

This pattern also displays when you enter
system setup and may not indicate a
problem.

• Ensure that the cables are properly

connected to the system board from the
hard drive, CD drive, and DVD drive.

• Check the computer message that

appears on your monitor screen.

• If the problem persists, contact Dell. For

information on contacting Dell, see your
online

User’s Guide.

Light Pattern

Problem Description

Suggested Resolution

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