I have 2 computers, both Windows XP. One of the machines plays the wmv files just fine. The other one will have sound but no picture. I upgraded from Windows Media Player 9 to 10 just to make sure, and still the same thing. I reinstalled the video drivers in case it was a conflict that way, yet still no picture.
I noticed that when I plugged my notebook into a projector, the picture did not transfer to the projector, only played on the notebook computer. It showed the Windows Media Player outline, but no picture, yet it did on the screen. So I wonder if something similiar is happening with the graphics card and the CRT monitor.
I downloaded the codecs from Microsoft and installed those just in case it was corrupt, still no picture. All Windows XP updates have been done including service pack 2. My other machine has all updates done also and it still plays fine, so that's not it.
Anyone have some feedback or suggestions to try?