User's Manual

174 Solving Problems
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Is the computer working properly?
Yes. The problem is resolved.
No. Contact Dell for technical assistance.
System Board Problems
A system board problem can result from a defective system board
component, a faulty power supply, or a defective component connected to
the system board.
Before you perform the following steps, check the diagnostic lights to see if
the specific problem is identified. If a system message indicates a system
board problem, 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 Reboot the computer and run the System Board Devices test group in
the Dell Diagnostics.
Did any of the tests fail?
Yes. Contact Dell for technical assistance.
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 the power cables from the power supply are firmly
connected to the connectors on the system board.
6 Close the computer cover.
7 Stand the computer upright.