just clean the filter or check the blades that rotate cause it causes over heating. if your going for no money spending option follow what I did. put the Xbox on, get a thin long stick and first locate the ventilation at the top of the Xbox remember your Xbox is on. start pushing the blades forcing it to spin a couple of times, when it starts spinning take the stick out and Walla it should start working. sometimes it spins automatically by itself when you do this like mine.