Hey im getting a xbox 360 and i've heard things about it not working so...if you got an xbox 360 but all of a sudden it doesn't work here's why:
1. it may be because its sitting up not on its side
2. check if the power button is red
3. you got ripped off (unless) you bought it at gamestop or another game store.
if you have any of these then here's is why it does not work. It must be on its side because it has 2 air vents one on the bottom on one on the top (open space needed) or if you don't think this is why....might as well get a new xbox cuz that's all i heard was wrong 0____0.
hope that helped!