If videos are buffering on your PC then one or more of the following tips may help;

1. Clear your browser's cache and cookies.

2. Make sure you have a high connection speed.

3. Make sure your Flash player is up-to-date.

4. Try a different internet browser. For instance, if you're using Internet Explorer, try using Firefox or Chrome to see if that helps

5. Pause the video until it has fully loaded.