Dell Dimension L___cx - Manual (Page 79)

support.dell.com Checking Inside Your Computer Your Computer 6-1
This chapter describes troubleshooting procedures for expansion cards, memory,
drives, and the system board. Some procedures require you to access the inside of
the computer and remove and reinstall components. Procedures are also included for
checking a wet or damaged computer.
CAUTION: Before completing any of the procedures in this chapter, be sure
to follow the procedures in “Safety First—For You and Your Computer” in
Chapter 2.
Expansion Cards
If an error message indicates an expansion-card problem or if an expansion card
seems to perform incorrectly or not at all, the problem could be a faulty connection, a
conflict with software or other hardware, or a faulty expansion card. If software prob-
lems and conflicts have been eliminated, perform the following general steps to
troubleshoot expansion cards:
1. Remove the computer cover and rotate the power supply as described in
“Removing and Replacing the Computer Cover
Computer Cover” and “Rotating the Power Supply
Away From the System Board” in Chapter 2.
2. Remove all of the internal and external cables attached to the expansion cards. bles attached to the expansion cards.
3. Remove the expansion cards as described in “Removing Expansion Cards” in
Chapter 2. Then reinstall the expansion cards, fully seating the cards in their
connectors.
Figure 6-1 illustrates a correctly seated expansion card, and Figure 6-2 illustrates 1 illustrates a correctly seated expansion card, and Figure 6-2 illustrates
incorrect expansion-card installations.
4. Reconnect the cable connectors to the appropriate connectors on the expansion
cards.
5. Rotate the power supply back into position, replace the computer cover, connect
all external cables, and turn on the system.
The following subsections provide troubleshooting procedures for some specific
types of expansion cards.