I've installed many a DVD Drive with nary a problem. However, I am now installing a typical DVD drive an XP box (Sony Vaio). The OS sees the drive, but tells me there was trouble installing the hardware. When I check in Device manager it shows the correct drive with the big yellow exclamation point and tells me that it couldn't install the drive due to incorrect or damaged registry files. I ran a registry tool and it fixed a bunch of errors, but not the DVD problem. I would normally run a repair from the XP OS CD disk, but . . . that requires a DVD/CD drive. Anyone have any idea which registry files I repair and how to do it? I feel between a rock and a hard place.