WMV's fail to render under Media Player Classic

Hello All,

I've got a problem with getting WMV's to render on Media Player Classic.
files fail to render. I've had this issue before under the same circumstances.
That is, When I reinstall windows I've got to work to make them render, but I
still don't know HOW i get them to render. I play with the settings until they
work. I've got all the codecs installed. I've check that they render under
Windows Media Player, and they do. They just fail to render under Classic.

This one is stumping me, and has since the beginning.