Usually, when I have problems with dvd playback. A reinstall of the display driver and it fixes it. I'm running on nVidia's v61.77, without any hickups from any dvd playback yet.

Or it may like a compatiblity problem with SP2? with certain dvds?

Anyone have any ideas?

yes uninstall media player 10 and Put media player 9 back cause I know a few people who installed media player 10 and had all the same probs hope this helps

if you cant find media player 9 try looking no download.com

/off topic

would just want to add vlc-player from http://www.videolan.org/ as a option.

No need for codecs because it plays all formats, with crystal clear and loud audio. Very easily configurable and play *.bin and *iso directly.