Videos and mp3 files on my hard drive play okay including sound.
I can download videos from YouTube and they will play including sound.
If I try to play a video directly from YouTube I get the picture, but no sound.
Videos offered to me via Email will give me pictures, but no sound
Non-YouTube videos offered to me on the internet will give me pictures, but no sound.
The first thing I wanted to try was reinstall Internet Explorer9. But when I try to unistall Internet Explorer9 I get a popup saying I already have the latest version, and unistall does not proceed. If I try to install latest version on top of what I have, same thing happens.