A bit of an update, yesterday I managed to get it working, but then when I switched it off and tried it again it did the same thing, until I fiddled about with it and somehow got it working and shutting it down and holding the power button down etc.
Last night I tried to figure it out and I'm on the energy save mode for reference, but when I first tap the xbox button and it instantly lights up it doesn't show up, then if I hold it to shut it down and hold it when powering up it switches on but the xbox logo doesn't light up for about 10 seconds and then it somehow works fine. Anyone have any clues what this could be?