The dvd region is not the same for your drive as the disks you are trying to play/rip. You can set this manually by going to Device Manager, look at DVD/CD Rom drives, right click on the Drive and select Properties. This will bring up a new window with several tabs, click on DVD Region. You can change the drive to the region that matches your disks, but be aware that you can only do this a limited number of times, then the drive is locked to that region.
A better solution is to go to rpc1.org, and do a search there for your drive (make and model). See if there is a region-free firmware available for the drive. http://forum.rpc1.org/portal.php
If there is one, read the instructions carefully on how to flash the drive.