13Run the appropriate online diagnostic test. See "Running the System Diagnostics" on page 163.
If the tests fail, see "Getting Help" on page 167.
14For each expansion card you removed in step 10, perform the following steps:
a Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
b Open the system. See "Opening the System" on page 82. c Reinstall one of the expansion cards.
d Close the system. See "Closing the System" on page 83.
eRun the appropriate diagnostic test.
If the tests fail, see "Getting Help" on page 167.
Troubleshooting the Microprocessors
WARNING: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before you begin this procedure, review the safety instructions that came with the system.
1Run the appropriate online diagnostics test. See "Using Dell™ Diagnostics" on page 163.
2Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
3Open the system. See "Opening the System" on page 82.
4Ensure that each processor and heat sink are properly installed. See ""Installing a Processor" on page 129."
5Close the system. See "Closing the System" on page 83.
6Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
7Run the appropriate online diagnostic test. See "Running the System Diagnostics" on page 163.
If your system only has one processor and a problem is still indicated, see "Getting Help" on page 167.
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