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42 Advanced Troubleshooting
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Memory modules are detected, but a
memory configuration or
compatibility error exists.
• Ensure that there are no special
memory module/memory
connector placement
requirements (see page 75).
• Verify that the memory modules
that you are installing are
compatible with your computer
(see page 75).
• If the problem persists, contact
Dell (see page 90).
A possible expansion card failure has
occurred.
1
Determine if a conflict exists by
removing a card and then
restarting the computer.
2
If the problem persists, reinstall
the cards that you removed,
remove a different card, and then
restart the computer.
3
Repeat this process for each card.
If the computer starts normally,
troubleshoot the last card
removed from the computer for
resource conflicts (see "Resolving
Software and Hardware
Incompatibilities" on page 49).
4
If the problem persists, contact
Dell (see page 90).
Other failure has occurred.
• Ensure that the cables are
properly connected from the hard
drive, CD drive, and DVD drive
to the system board (see
page 70).
• If the problem persists, contact
Dell (see page 90).
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
A B C D
A B C D
A B C D