To be Honest, internet explorer is not my taste of good web surfing, Its slow and horrible. So I use Mozilla firefox instead. Its much faster to use and browse videos. Its a much better experience than Internet Explorer.
Firefox is getting more popular, you should try it.
If you like to still use Internet explorer though, try clearing all your internet cache, history, ect... out. Reset all your internet settings. If the problem still persists look in the help section or re-downloadd Internet explorer.
For a better and easier web surfing experience heres the link for Mozilla firefox web browser:
Trust me, its much better