Hi, I bought a brand new Nextar MA 166 Digital MP3 Player for my daughter's Birthday - everything works great, installed everything on computer, etc. - even works with songs on when it is PLUGGED IN ONLY! As soon as I take out the connecter from the USB Port to MP3 player, it totally dies. I have let it charge overnight, tried the re-set button... nothing works - help asap pls, thanks in advance!.