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 page75).
• Verify that the memory modules
that you are installing are
compatible with your computer
(see page75).
• If the problem persists, contact
Dell (see page90).
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 page49).
4
If the problem persists, contact
Dell (see page90).
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
page70).
• If the problem persists, contact
Dell (see page90).
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
A B C D
A B C D
A B C D