For some reason I'm having major problems with my windows media player. Movies will play in WMP9 fine, but when I try to stream anything off the interweb I get a grey screen with sound in the background. So I says to myself I says, ok, let me install WMP10. I goto install it, I get the error "This software has not passed Windows Testing Certificate". I definately know that it's not my codecs that are the problem, because I have every codec ever installed on my machine, so I have no idea what in the hell could be wrong.

Has anyone seen, or dealt with this problem before? I've been trying to fix it for like 2 hours now but have had no success.