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34 Quick Reference Guide
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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
exist.
• 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
.
After POST is complete, all four
diagnostic lights turn green briefly before
turning off to indicate normal operating
condition.
None.
Light Pattern Problem Description Suggested Resolution