sony dru-810 DVD Drive will not open. It shows in the device manager and shows that it is working properly. If I hit the physical button nothinh happens, if I try to open it through windows or anyprogram, the computer freezes completely. It has been doing this for a while. It used to come back online after a shutdown. It kept taking more and more shutdowns and eventually system restores to get it back. It does not matter if a disk is in there or not, it will just decide it does not want to open. I hade to unplug it from the cable with just power on it to get it back the last time - now one day later it is locked closed again. Anyone had this happen before or any ideas to permanatly fix this issue will be greatly appreciated.