Hello MactabardX,
I would try and remove Windows Media Player and then reinstall it.
Uninstalling and Reinstalling the Windows Media Player:
Step 1.
Uninstalling the Windows Media Player:
- Go to Start and in the search type "Turn Windows features On or Off".
- Click on "Turn Windows features On or Off".
- Browse to the Media Features and uncheck the mark in front of Windows Media Player.
- Restart the computer
Step 2.
Reinstalling the Windows Media Player:
- Go to Start and in the search type "Turn Windows features On or Off".
- Click on "Turn Windows features On or Off".
- Browse to the Media Features and place a check mark in front of Windows Media Player.
- Restart the Computer.
If you are having trouble using Windows Media Player, try using the troubleshooter to see if that fixes the problem.
Open the Windows Media Player Settings 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 Settings.
If the size of the .wmv files are too large, it may cause Windows Media Player to stop working.
I would try and remove the videos from the Windows Media Player library and test to see if the size of the files could be causing a problem.
Please reply back and let us know if these steps helps.
Thanks,
Marilyn
Microsoft Answers Support Engineer
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