Both DVD drives work fine under XP, in fact, I am listening to some of my CD's on the DVD drive as I type this (under XP of course) 7. This behavior was seen on the old drive which I have moved to my other system and it works fine. This is a brand new drive, arrived 2 days ago. I check of the Event manager shows that W7 is spitting out a 'controller error' every 30 seconds and this is probably why it never returns. A check of the Hardware manager shows that the device is suppose to be working fine. With the old drive, it would sometimes respond after a while but unfortunately I did not check the Event log at that time. I did not have the patience to wait many hours to see if it would finally respond. After rebooting to W7, I put the motherboard disk into the DVD, and it never responded. At this point, the install looked like it had stopped but I left it alone for some 5-6 hours and it finally completed. When I installed W7, I did so from XP and it was doing fine until the first reboot and W7 took over. Seeing the same type of problem I also have an LG DVD and windows 7 can 'see' it but cannot handle it.