![](/images/new-backgrounds/1263489/263489303x1.webp)
20Open the system. See "Opening and Closing the System" on page 66.
21Reinstall the processors that you removed in step 10. See "Processors" on page 105.
22Close the system. See "Opening and Closing the System" on page 66.
23Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
If the problem persists, see "Getting Help" on page 167.
152