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160 Solving Problems
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Fill out the Diagnostics Checklist as you perform the following steps.
CAUTION: Before you perform this procedure, see "Safety First—
For You and Your Computer."
NOTICE: Before disconnecting a device from the computer, wait 10 to 20
seconds after disconnecting the computer from its electrical outlet. Before
removing a component from the system board, verify that the standby power
light on the system board has turned off. To locate this light, see "System Board
Components" or the interior service label.
1
Run the diagnostics provided by the manufacturers of all expansion
cards installed in your computer.
NOTE: The manufacturers of many expansion cards, such as video,
network interface, and sound cards, provide diagnostics programs. If you
do not have any diagnostics for your cards, go to step 2.
Did any of the diagnostics identify a problem?
Yes. Contact the manufacturer of the card(s).
No. Go to step 2.
2 Turn off the computer and devices, disconnect them from their
electrical outlets, and wait 10 to 20 seconds.
3 Lay the computer on its right side.
4 Open the computer cover.
5 Ensure that each expansion card is firmly seated in its connector. If any
expansion cards are loose, reseat them.
6 Ensure that all cables are firmly connected to their corresponding
connectors on the expansion cards. If any cables appear loose,
reconnect them.
For instructions on which cables should be attached to specific
connectors on an expansion card, see the expansion card's
documentation.
7 Close the computer cover.
8 Stand the computer upright.
9 Reconnect the computer and devices to their electrical outlets, and
turn them on.
Is the computer working properly?