My 1 week old Sony NW-HD5 has just, all of a sudden, frozen on me. The buttons don't work, the screen stays the same and the backlight (and player) will not turn off . I have tried charging it directly from the mains but nothing seems to happens(does not even show any sign of charging) I also looked on the troubleshoot in the manual and it had nothing about the above syptoms. But it did have something about the buttons freezing because of it being brought directly from a cold place to a warmer place(something to do with condensation?). Does anyone know how to sort this out, as the player doesn't seem to have a reset button.