Clip Zip restart after sync

I have recently bought a sansa clip zip and today as i was trying to sync some music on it, when i disconnected it, i was shown the “refreshing your media” screen and 2 seconds after the screen goes black.Resetting the player makes it go to the refreshing media screen,and then it reboots,being then stuck at the refreshing media screen,even though i do not have anything on the player.