1. Try to launch the video from this page or clear caches and cookies from your browser.
2. Update your browser to the latest version.
3. Try to recreate the problem on different browsers and see if this still occurs.
4. Disable all your browser add-ons (extensions and plugins) while troubleshooting.
5. Disable all anti-virus software while troubleshooting.
6. Try another computer.
7. Try another Internet connection.