"* To Restart - Press and hold the on/off button for 10 seconds
* To Power off - Press and hold the on/off button for 3 seconds and then pull down on the screen
* To Initialize - Restart the player and press both the home button and the media button (all content is deleted)
* To enter Recovery mode - Press and hold the on/off and media buttons for 15 seconds. The player restarts into Recovery mode and must be reconnected to the Zune Software to reinstall the player firmware( content is not erased)."
Try the following steps. Good Luck