How To Uninstall / Reinstall Windows Media Player 12 In Windows 7
So over a period of time, you installed and uninstalled many third party Media Players, DVD Players on your Windows 7 PC. Each of these third party software try to associate media files with themselves and finally you end up with messed file associations for audio and video files. Sometimes even codecs get messed up. You might be entangled in a situation in which the media files that used to launch via Windows Media Player now launches with some other software. You may want to revert it to WMP12. In such cases as well as when your want to repair WMP12, it’s a good idea to reinstall Windows Media Player 12.
Following is the step-by-step guide.
Uninstall Windows Media Player 12
Note that uninstalling Windows Media Player 12 also disables Windows Media Center because WMC uses WMP12 for it’s operation.
1. Click “Start” button, type “windows features” in the program search box and hit enter.

2. In the “Windows Features” dialog box, look for “Media Features” and expand it.
3. Clear “Windows Media Player” check box.

4. As soon as you clear the check box, you will see a pop-up saying that “The following Windows features will also be turned off because they are dependent on Windows Media Player.” The listed program is “Windows Media Center”.

Go ahead and click “Yes”.
Windows will now begin uninstalling WMP12.

You to restart Windows for the uninstallation to complete.

Reinstall Windows Media Player 12 and Windows Media Center
Follow step 1 and 2 from same as above.
3. Check boxes “Windows Media Player” and “Windows Media Center”.

4. Click “OK”.
Windows will take some time in reinstalling them. Wait for the process to finish.
