Use your tube of thermal paste to apply a small drop to the middle of the processor die, about the size of a grain of rice.

The mounting pressure from reinstalling the heat sink will usually adequately spread the thermal paste out, but some applications recommend manually spreading the thermal paste. Follow this guide for how to do that.

If you accidentally get a little bit of thermal paste on the green PCB surface surrounding the processor die, don't worry! It won't cause any problems.

You don't need to apply any thermal paste to the heat sink—only the processor.

The processor is now ready for the heat sink to be reinstalled.

Return to Step 8 and follow the instructions in reverse order to reassemble your laptop.