If the thermal pad is damaged in any way, follow the thermal pad replacement guide to apply a new thermal pad during reassembly.

If the thermal pad stuck to the top cover and is in good condition, you can proceed with this repair and simply reinstall the top cover with the thermal pad.

If the thermal pad stuck to the processor and is in good condition, use a pair of tweezers or your fingers to remove the thermal pad and set it aside. Then, follow the reassembly instructions below.

During reassembly:

Use high concentration (greater than 90%) isopropyl alcohol and a coffee filter or lint-free cloth to clean the new processor and the area of the cover that will contact the thermal pad.

Apply the thermal pad to the processor on the new processor module.

Proceed with re-installing the top cover.