Memory Issues

I plugged it into another computer and it does the same thing. I try to put a file onto the player and the computer says that the destination drive is full. I am pretty sure that it is something with the player. Is there anyway that the hard drive can be reset or restored to factory default? I haven't tried to put any new firmware or anything on it so there is no good reason why it's doing this. I just got the bloody thing a few days ago. It would be cool if it didn't suck.