Okay well I have been playing games on my Xbox 360 slim. Then I unplugged it and took it to my moms and plugged it in and connected the HDMI cord and now its not working. It will cut on but it wont even connect to my controller and it cuts off in like 15 mins for no reason. Help please! Thanks !
Disconnect all power & audio cables and reconnect them, if not then check your tv or power source, that might be your problem
If it's anything like mine then it mite be the TV, try changing channels to and from the hdmi to any other and see if that works just mite not be sensing the connection