Dell XPS 730 (Late 2008) - Manual (Page 78)

76 Replacing the Processor
CAUTION: To avoid damage, ensure that the processor aligns properly with the
socket, and do not use excessive force when you install the processor.
12 Set the processor lightly in the socket and ensure that the processor is
positioned correctly.
13 When the processor is fully seated in the socket, close the processor cover,
if applicable.
Ensure that the tab on the processor cover is positioned underneath the
center cover latch on the socket.
14 Pivot the socket release lever back towards the socket, and snap it into
place to secure the processor.
15 Clean the thermal grease from the bottom of the heat sink.
CAUTION: Ensure that you apply new thermal grease. New thermal grease is
critical for ensuring adequate thermal bonding, which is a requirement for optimal
processor operation.
16 Apply the new thermal grease to the top of the processor.
17 Install the processor fan and heat sink assembly (see "Replacing the Heat
Sink Assembly" on page 67).
CAUTION: Ensure that the processor fan and heat sink assembly is correctly
seated and secure.
18 Replace the computer cover (see"Replacing the Computer Cover" on
page 17).
19 Connect your computer and devices to electrical outlets, and then turn
them on.