Download the Microsoft Fix It tool designed to troubleshoot issues pertaining to CD and DVD drives. For computers running on Windows XP, Vista or 7, this Fix It can be found here. For computers running on Windows 8 or 8.1, this Fix It can be found here.
Uninstalling your DVD drivers and then restarting your system should be the next thing on your list. Uninstalling a driver might seem illogical but the Windows have its own generic drivers for every device. So, if you reboot the system after uninstalling a specific driver, Windows will automatically install a driver for that device. Since Windows own drivers are the most compatible versions so this is bound to work.
After you have completely uninstalled all of these software/drivers restart the computer. Windows will automatically configure the drivers and your issue should be resolved after this. Check to see if your DVD drive has returned.