It seems like you're encountering an issue with playing DVDs on Windows 7 after upgrading from Vista. There are a few reasons why this might be happening, and here are some troubleshooting steps you can try to resolve the issue: 1. Check DVD Player Software: Windows 7 does not have native DVD playback support. You may need to use third-party software like VLC Media Player or CyberLink PowerDVD to play DVDs. 2. Update DVD Drive Drivers: Ensure that your DVD drive's drivers are up to date. You can do this by going to Device Manager, locating your DVD drive, right-clicking on it, and selecting "Update driver." 3. Check Autoplay Settings: Make sure that the Autoplay settings in Windows 7 are configured to play DVDs when...