My Xbox S starts to turn on and then shuts back off
When I plug my Xbox into the wall outlet the power brick turns orange and then as soon as I touch the power button or the eject button, green lights are on both the console and the power brick and then it shuts right off and the light on the power brick turns back to orange. I've tried brand new power bricks and the same problem happens. I brought the system in 2010 and after a couple of months the system would not turn on and the power brick had a red light, nothing on the console. After trouble shooting over the phone with Microsoft I returned the power brick and they sent me a new one and had the same problem. After giving up from frustration for a year I tried the system again recently and to my surprise it worked. After two back to back weekends (the only times my kids play it) all of a sudden this new problem of turning on and off started. I've tried every online trouble shoot and nothing is working. There doesn't seem to be any damage to the USB ports, as most people have suggested to be a potential cause and as mentioned earlier even a new power brick/cord doesn't do the trick. Please help.