1.Make sure the service Shell Hardware Detection is started and set to AUTO
2.Navigate to key HKLM\System\CurrentControlSet\Services\Cdrom and check you have phrase Autorun =1,if is 0 fix it + restart
3.Check also this ->DVD Drive Icon Disappeared from Computer - Fix
4.If everything fail download FrogAspi Frog Aspi - the FREE wnaspi32.dll replacement
place wnaspi32.dll in C:\Windows\SYSWOW64 again uninstall DVD driver + restart