Reads no data on the player

It was a charge error then the battery goes down rapidly until empty.. then i cant turn it on now and it even cant be detected by the computer. i cant charge it also..
pls help.

Have you authorized the player? if not, or youre not sure, go here: http://www.docs.sony.com/release/Authorizing_flyer.pdf Theres also this documentation which notes your "no data" symptom - http://www.docs.sony.com/release/NWE405-407rev_note.pdf You will get a "no data" if you tried to format the player through windows explorer instead of through the player, and formatting it again, this time throught the menu in the player should fix this. Also there appears to be a transfer limit on the sonic stage software. something around 65,000, but who knows, maybe you managed to get there... Good luck