Make sure the DVD unit has it's Playback Region set. From the
Properties box for the Optical drive click on the DVD Region (TAB)
and select the appropriate country.

"Alfred Kaufmann" <al_kaufmann********.com> wrote in message
news:7sdgk31qdh8jju99h3pb5l37kf9svcls3k@4ax.com...
>I have a friend with Winodws XP SP2 and all the latest updates. He
> says he used to be able to play DVDs on his machine but now if you
> insert a DVD you get a message that it can't be played and to lower
> the resolution and or the color quality. The screen resolution was
> already set as low as possible 800x600 on his machine and the color I
> changed from 32-bit to 16-bit and nothing changed. I tried both the
> Windows Media Player and another player that I instaled from the DVD.
>
> Anyone have any idea what is going on here?
>
> Al