I have the SAME problem too... its NOT the battery.. i JUST got this today.. 12/25/07 and I have been charging it... then, when it says its Charged fully, i eject it from the iTunes/USB... and then, I disconnect the USB cord... the the screen goes black, and Whatever was on the screen, breaks up.. and freezes.. then slowly dissapaits... and dissapears... I then cannot turn it on...
It ONLY works when I have it plugged into the computer and hooked up to iTunes.. Its making me mad, seeing as I have paid like $200 for an realiable iPod nano *2nd generation*..... Support does NOT help at all.. and when it is unplugged from the USB, it wont reset then... just when its plugged in...
I have a PC Windows XP and its a Toshiba.. Works fine... and the iPod nano is new... Please, if you can, help...
Thank you,
Elizabeth