My maxtor onetouch 3 500gb external that has my extensive movie collection along with entire time machine backup of my macbook pro all of a sudden stopped showing up when i plug it in. I tried unplugging it from the usb hub, switching usb cables, unplugging it from the wall and am getting pretty concerned. Anyone have any ideas as to what could be wrong? Its out of warranty and im not looking to spend the hundreds of dollars maxtor will charge me to fix it.