Windows media player cannot play the video because there is a problem with your video card

Hi,

When i am palying any DVD/ movies on my notebook with OS Windows

vista home premium, i am getting an error as "Windows media player

cannot play the video because there is a problem with your video card"

when i click on "web help" button i am geting the error code

"C00D10BD". In net it is given that this will be fixed by installing

DirectX, but when i am try to install it, i am getting one more error

as "A cabinet file necessary for installation cannot be trusted.

Please verify the Cryptographic Services are enabled and the cabinet

file certificate is valid." Could you please help me out in this

regard?

Regards

ranjit bhumula