Does any one know a fix for this????

[1piranha]

My Sony vio VGN-FS295XP dosen't play DVDs on 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.                                                 

By the way the VLC works and i can play dvds, but not on Windows Media Player which I prefer.

Can any one recomend a fix ???

[Blencogo · Accepted solution]

By default, Windows XP Pro does not include a DVD decoder for WMP. 

XP MCE does include the decoder and can play DVDs as can Vista HP and above.

You may have to continue with VLC or alternatively purchase a MPEG-2 decoder.

http://windows.microsoft.com/en-US/windows/downloads/windows-media-player/plug-ins

Or, better still, try downloading a free Codec Pack like the K-Lite Codec Pack: -

http://www.filehippo.com/download_klite_codec_pack/