Sometimes I have noticed that my EHD or jump drive won't show up in the My Computer window right way but if I close the window and wait until the computer has completely recognized the added hardware then reopen My Computer -the icon for the drive will be there. Also I recently had small portable EHD that was only two months old that woudn't show up sometime and some other problems. They figured it was faulty and replaced it. I sure learned my lesson- still have to backup to DVD's to play it safe. Hope you get it worked out. Is there an online support for your unit?