Kindly let me know if “YouTube” or any other online videos works fine or not? If yes, you can follow the below mentioned steps which should fix the issue:
2. Open Internet Explorer, click on “Tools”, click on “Delete Browser History” then click on “Advanced” and click “Reset”.
3. Ensure "Enable Hardware Acceleration" is unchecked, if not, right click on the video after opening video online. Then click on the first folder “Display”. Uncheck "Enable Hardware Acceleration".
4. I will also suggest to update Flash Player from the site: http://get.adobe.com/flashplayer/?p...
Hope this helps
Thanks & Regards