User's Manual

Solving Problems 173
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 System Board Devices and Processor Cache test groups in the
Dell Diagnostics.
Did any of the diagnostics tests fail?
Yes. Contact Dell for technical assistance.
No. Go to the next question.
Do you have two microprocessors installed in the computer?
Yes. Go to step 2.
No. Go to step 3.
2 Enter system setup and ensure that values for Processor 0 and
Processor 1 under the CPU Information option are identical.
Are the two microprocessors identical?
Yes. Go to step 3.
No. You must replace one or both of the microprocessors to make
them identical. Contact Dell for technical assistance.
3 Turn off the computer and devices, disconnect them from their
electrical outlets, and wait 10 to 20 seconds.
4 Lay the computer on its right side.
5 Open the computer cover.
6 Remove and install the microprocessor(s).
7 Ensure that the microprocessor fan cables are firmly connected to the
connectors on the system board.
8 Remove and install the VRM(s).
9 Close the computer cover.
10 Stand the computer upright.
11 Reconnect the computer and devices to their electrical outlets, and
turn them on.