I've been working on someone's comptuer, and for some reason his DVD drive refuses to read DVDs. It will load data and audio CDs fine, but if you put in a DVD it trys reading it and then give up. If you look at the drive in explorer it shows nothing (but doesn't say there is nothing inserted). PowerDVD claims that the drive is empty. I've gotten the latest driver, and it's set to region 1. Device manager says it's working properly. I've tried removing it and rebooting and letting Windows (XP) find it again, but it still refuses to play DVDs. Does anyone have any ideas?