Installed Windows 7 64-bit Build 7100 on system with Plextor Sata2 DVD Drive. No issues. After about 3 days, the DVD locked up. the tray would not open. Even using the Manual Tray Eject did not work well. After I got the tray opened, I rebooted the computer to see if bootup would suck the drive tray in. No luck. Just replaced the DVD Drive with a brand new Pioneer DVD-RW DVR-216R 1.02 Qflix Sata 2 Drive. Same issues! The tray will not open. Windows 7 Device Manager shows the drive is working properly. Any ideas what is making the DVD unuseable?