Removal
Base Cover
Identify the base cover highlighted in blue.
Loosen the captive screws that secure the base cover.
Pry the base cover near the hinges. Pry from recess points near the hinges.
Loosen the base covery by working on the left, right and, bottom sides to open the base cover.
Lift to remove the base cover.
Battery Cable
Identify the battery cable highlighted in blue.
Disconnect the battery cable from the connector on the system board.
Press and hold the power button for 10 seconds to ground the system and remove residual static electricity.
Heat sink
Identify the heat sink highlighted in blue. Ensure the system is cooled down before removal.
Loosen the captive screws that secure the heat sink. Loosen in reverse order.
Lift and remove the heat sink off the system.
Use the alcohol pad to clean the system board and heatsink (as shown in the video).
Install
Heat sink
Identify the heat sink location highlighted in blue.
Apply a pea sized amount of thermal material as shown.
Place the heat sink on the system board and align the screw holes.
Tighten the captive screws that secure the heat sink. Tighten in order. Do not over tighten.
Battery Cable
Identify the battery cable location highlighted in blue.
Connect the battery cable to the connector on the system board.
Base Cover
Identify the base cover location highlighted in blue.
Align the base cover tabs to the slots, press the cover until it clicks into place.
Tighten the screws to secure the base cover to the chassis.