Cannot play DVD on Vista with Media Player

I got the following message when playing DVDs on Vista home premium with
Windows Media Player. The same problem happens to media center.

Windows Media Player cannot play this DVD because there is a problem with
digital copy protection between your DVD drive, decoder, and video card. Try
installing an updated driver for your video card.

I can play those DVDs on PowerDVD or VLC player. I installed K-Lite codec.
It still doesn't work. It looks like it is not codec problem.

Does anyone know what is going on? Thanks for your help.

"Jason Chen" <> wrote in message
news:. ..
>I got the following message when playing DVDs on Vista home premium with
>Windows Media Player. The same problem happens to media center.
>
> Windows Media Player cannot play this DVD because there is a problem with
> digital copy protection between your DVD drive, decoder, and video card.
> Try installing an updated driver for your video card.
>
> I can play those DVDs on PowerDVD or VLC player. I installed K-Lite codec.
> It still doesn't work. It looks like it is not codec problem.
>
> Does anyone know what is going on? Thanks for your help.

I think you are getting bit by the DRM component HDMI. You will learn to
curse those two acronyms. While touted as a feature, HDMI is a PITA to all
consumers pure and simple.

Could be your video card is not HDMI capable. I am not an HDMI expert, but
DVD, Video card and monitor need to be HDMI compliant or it either will not
work or degrade.