first my ipod was fine. but 1day it would not turn on so i pluged in a charger and the apple logo appeared and after a few seconds the ipod just shut off.after i few tries i pluged it to my pc itunes did not detect. so i tried force the ipod to restore mode and itunes detected it.it display the connect to itunes logo. when i start to restore the ipod will restart when itunes says it is "preparing ipod for restore" and the restore fails. anyone can help?