Open the Windows Media Player DVD troubleshooter
If your computer has problems playing a DVD in Windows Media Player, try using the Windows Media Player DVD troubleshooter to fix the problem. The troubleshooter checks for common issues, such as making sure you have both a DVD drive and the correct DVD decoder installed on your computer.
To make sure you have the most up-to-date troubleshooters from the Windows Online Troubleshooting Service, your computer should be connected to the Internet. For more information, see Troubleshooting in Windows.
Open the Windows Media Player DVD troubleshooter by clicking the Start button , and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Click View all, and then click Windows Media Player DVD.
For more information about playing a DVD in Windows Media Player, see Play a CD or DVD in Windows Media Player.
Article ID: MSW700020