Things You'll Need
Instructions
Remove all video cables and power cords from the rear of the Xbox 360. Remove the faceplate on the front of the machine by gripping it firmly on one side and pulling toward yourself. The faceplate will come off and allow you to access the plastic shell covering the console.
Open the plastic casing on the Xbox 360; then use your Torx size 7 screwdriver to unscrew the screws located on the machine's metal interior. Slide open the console's metal cover to access the motherboard and other internal hardware components.
Unscrew the metal heatsinks on top of the GPU and CPU chips inside the console. Once the heatsinks are removed, you can access each chip and replace the thermal paste on top of it if needed.