xbox will power up but no signal is being sent to my TV and it will not let me open the DVD drive either! The light flashes whilst it "tries" to open the dvd drive then stops and the drive doesnt open. I can hear it make a noise as if it is trying. Any ideas? One day it was working, the next it had stopped working. Tried it in 2 different TVs just in case but still no joy. TIA.