heat sink compound will do the trick. you have to take off the heat sinks in side your 360 and scrape off the old compound and put just a little of the new heat sink compound where the old compound was then screw them back on and it should work. you can get heat sink compound at radioshack for like 5 bucks. its cheap and it does work in most cases. you could possibly have motherboard damage wich would require a professional. but try the heatsinks first and go from there. if you dont know what heat sinks are then just look it up online. only do this if your comfortable working inside your 360. but do your homework on it and it should be an easy fix. do some research online and get up to knowledge on it. im not responsible for anything that may happen.