Hellow I have a problem with my MP3 samsung YP-U1It doesn't work. When i turn it on.. it's written:" 20%" and then "0%" and again and again.If I want to turn it off I can't. It does not responding when I push thte button.I don't know what to do. It' s not broken or something like that. And the computer can't read it...i mean when i put it in the USB, my computer give a sound like the MP3 is connected...But it doesn't appear in My computer just after minutes. And if I want to open it ...I can't.PLEASE give me a help