Codec to Play H.264 Win 7 Profesional 64Bit

I have been battling with Windows 7 64Bit professional version to get to work with H.264 channels (Luken Mux, SNF, CBS, etc...)

I have the same setup working on a smaller duo core pc but somehow I can't get this recently installed windows to work on a quad core PC.

These are my steps:

1- installed fresh copy of windows 7 professional 64 Bit.
2-Installed ethernet card + USB drivers for Mother Board.
2- installed Nvidia drivers for my video card
3- installed TBS-6925 card
3-installed C++ distributel x.86
4-Installed DVB-Viewer with LAV and AC3 filters.
5-Installed VLC
6-installed DirectX 11
7-Installed crazycat and libraries
8- installed SmartDVB

These were my steps as I did with my duo core that it is working ... Am I missing something that I can't get the H.264 channels to display properly. 

When I try to play those channels I get a green or grey screen and sound is all cracking...

Any help would be great.

PS: I tried CoreAVC 3.0.1 and still no go...

Thanks...

Forum: Computer and USB Satellite Receivers and Recording