Ok so for christmas my little brother(who is 11)got an XBOX 360 Slim for christmas but yesterday he was playing Halo Reach(not something I agree with him playing but it came bundled with the console) and he turned off and now it won't start up again, all the wires and cables are plugged in but nothing's responding, the controller is fine but the 360 won't even light up, tips on how to get it operating again?