Prerequisites
CAUTION: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is necessary to maintain proper thermal conditions.
WARNING: The heat sink is hot to touch. Allow the heat sink to cool for some time after powering down the system.
Follow the safety guidelines listed in the Safety instructions section.
Follow the procedure listed in the Before working inside your system section.
Turn off the system and any attached peripherals.
Disconnect the system from the electrical outlet and disconnect the peripherals.
Remove the system cover.
Disconnect the CPU fan cable connected to the system board.
Keep the Phillips #2 screwdriver ready.
Removing a heat sink:
Loosen one of the screws that secure the heat sink to the system board.
Allow some time (approximately 30 seconds) for the heat sink to loosen from the processor.
Remove the screw diagonally opposite to the screw that you first removed.
Repeat step 1 and 2 for removing the remaining two screws.
Lift the heat sink out of the system.
Removing the processor:
Release the socket lever by pushing the lever down and out from under the tab on the processor shield.
Lift the lever upward until the processor shield lifts.
CAUTION: The processor socket pins are fragile and can be permanently damaged. Be careful not to bend the pins in the processor socket when removing the processor out of the socket.
Lift the processor out of the socket.
NOTE: After removing the processor, place it in an antistatic container for reuse, return, or temporary storage. Do not touch the bottom of the processor to avoid damage to the processor contacts. Touch only the side edges of the processor.
Installing the processor:
Align the processor with the socket keys.
CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket.
Release the socket-release lever by pushing the lever down and out from under the tab.
CAUTION: Positioning the processor incorrectly can permanently damage the system board or the processor. Be careful not to bend the pins in the socket.
CAUTION: While removing or reinstalling the processor, wipe your hands of any contaminants. Contaminants on the processor pins such as thermal grease or oil can damage the processor.
Align the pin-1 indicator of the processor with the triangle on the system board.
Place the processor on the socket such that the slots on the processor align with the socket.
Close the processor shield.
Installing a heat sink:
Place the heat sink onto the processor.
NOTE: Ensure that the CPU fan cable is close to its connector on the system board
Tighten one of the four screws to secure the heat sink to the system board.
Tighten the screw diagonally opposite to the first screw that you tightened.
NOTE: Do not over-tighten the heat sink retention screws when installing the heat sink. To prevent over-tightening, tighten the retention screw until resistance is felt, and stop after the screw is seated. The screw tension should not be more than 6 in-lb (6.9 kg-cm).
Repeat the procedure for the remaining two screws.
Connect the CPU fan cable to the system board.
Follow the procedure listed in the After working inside your system section:
Install the system cover.
Place the system upright on its feet on a flat and stable surface.
Reconnect the peripherals and connect the system to the electrical outlet.
Turn on the system, including any attached peripherals.
While booting, press F2 to enter System Setup and verify that the processor information matches the new system configuration.
Run the system diagnostics to verify that the new processor operates correctly.
