Things You'll Need
Instructions
Open the Xbox 360 case after disconnecting all power and video cables. Remove the outer plastic shell and unscrew the Torx screws located on the metal interior casing. Slide open the metal cover and locate the CPU and GPU (each covered by a large metal heatsink). Unscrew the heatsink located above each chip.
Place a small, pea-sized dab of thermal paste on the top of each chip and spread the paste evenly over its surface. Replace and rescrew the heatsinks on the CPU and GPU when done.
Replace all internal components inside the Xbox 360 and rescrew the Torx size 7 screws on the metal interior casing. Return the outside plastic case to its original position then plug in all power and video cables. Power on the console and it will operate normally and display the Dashboard menu.