Dell PowerEdge 1850 - Manual (Page 9)

Processor Upgrade Installation Guide
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11 Reinstall the center fan bracket or replace the memory module shroud (if applicable).
12 If you have added an additional processor, install the processor cooling fan(s) for the
new processor.
13 Replace the processor cooling fans (if applicable).
14 Close the system.
15 Reconnect your system and peripherals to their electrical outlets, and turn them on.
As the system boots, it detects the presence of the new processor and automatically changes
the system configuration information in the System Setup program.
16 Press <F2> to enter the System Setup program, and check that the processor information
matches the new system configuration.
See your User’s Guide for instructions about using the System Setup program.
17 Run the system diagnostics to verify that the new processor operates correctly.
See "Running the System Diagnostics" in your Installation and Troubleshooting Guide
for information about running the diagnostics and troubleshooting processor problems.
18 Replace the bezel (if applicable).