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82 Troubleshooting
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Light Pattern Problem Description Suggested Resolution
No memory modules
are detected.
• If two or more memory modules are
installed, remove the modules, then
reinstall one module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one at a
time) until you have identified a
faulty module or reinstalled all
modules without error (see "Memory"
on page 129).
• If available, install working memory of
the same type into your computer (see
"Memory" on page 129).
• If the problem persists, contact Dell
Support.
Memory modules are
detected, but a
memory failure has
occurred.
• If two or more memory modules are
installed, remove the modules, then
reinstall one module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one at a
time) until you have identified a
faulty module or reinstalled all
modules without error (see "Memory"
on page 129).
• If available, install working memory of
the same type into your computer (see
"Memory" on page 129).
• If the problem persists, contact Dell
Support.
System board failure
has occurred.
Contact Dell Support.
A possible processor
failure has occurred.
• Reseat the processor (see "Memory"
on page 129).
• If the problem persists, contact Dell
Support.