It was working okay last night, but when I turned it on today all I got was "File System Corrupted!" and I couldnt play it or anything. So when I got home I looked at the user manual and it said to hold down the control joystick while I plugged it into the USB port. This would put it into some sort of mode and I could format it. But I did this and my computer still doesn't recognize the device. Any suggestions?