How come the sound on videos plays just fine but the image is often pixelated?

by on September 9, 2009

Q: I have a computer running Windows XP. If I am watching some news feeds or when I insert a CD to watch a slide show, it comes out pixelated. I can hear the audio fine but cannot watch it at all. This isn’t consistent, some work fine, but I haven’t figured out what works, when, when and why… do you have any ideas?