A DVD device is configured to play DVD’s from particular region only, for example if you have bought a laptop in UK then the DVD device would probably play only region 2 DVD’s. And if you want to change the DVD region setting to play other regions DVD. the following has to be done.
Click on the Control Panel, followed by Administrative tools and then click the Computer Management.
select the DVD device and right click to access the properties of the device. Click on the Region tab to change the DVD region of your choice. And please make sure you have administrative privileges and the DVD of that region is inserted in to the device while doing this change.