My iPod Nano (I believe it is 5th generation) is only showing the "white screen of death." I have tried resetting it numerous times holding down the Menu and Select buttons. I tried charging it for two hours and then holding down the Menu and Select buttons. Each time the white screen would be replace by a black screen (no logo) and then the white screen would appear again. I restored it in iTunes, and the white screen was still there. Tried the reset thing again after this, and no change. Is it dead?