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 89. c Reinstall one of the expansion cards.

dClose the system. See "Closing the System" on page 90.

eRun the appropriate diagnostic test.

If the tests fail, see "Getting Help" on page 203.

Troubleshooting the Processors

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

1Run the appropriate online diagnostics test. See "Using Online Diagnostics" on page 193.

2Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

3Open the system. See "Opening the System" on page 89.

4Remove the memory risers. See "Removing a Memory Riser" on page 100.

5Remove the cooling fan assembly. See "Removing the Cooling Fan Assembly" on page 118.

6Ensure that each processor and heat sink are properly installed. See "Removing a Processor" on page 148.

7Install the cooling fan assembly. See "Installing the Cooling Fan Assembly" on page 120.

8Install the memory risers. See "Installing a Memory Riser" on page 101.

9Close the system. See "Closing the System" on page 90.

10Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.

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Troubleshooting Your System

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Dell E06S001, E06S Series owner manual Troubleshooting the Processors