Just installed version 18.104.22.168 and It no longer recognizes my DVD drive, says I don't have one! (I do and it plays DVD's just fine). I uninstalled, rebooted and re-installed 22.214.171.124 (did it twice) same result, says i do not have a DVD drive. What do I do now?? Should I go back to previous version? Never had this problem before, Any DVD has worked with this computer and DVD drive in all previous upgrades. Any advice would be appreciated.