see what you need to do is go down to the beach and get yourself some sand
open up the xbox and locate the computer chip with E74 written on it
pour a few teaspoons of sand on to this chip, and then vigorously rub the sand into it whilst eating a big mac from burger king
pour the remaining sand down your next door neighbours jeans with a big smile on your face and then have your neighbour fix the cover back onto your xbox while you recite a passage from the bible
your xbox should now work as normal
hope this helps