Playing video files and there stuttering?

[Yucca]

I am trying to watch some vid files. I open them in windows media player and they work fine and the sounds fine but the picture is small so i have to double click to get full screen. But what its full screen it doesnt play properly, it stutters.

The properties of the files say there XVID video conpression. I have XVID codex installed so cant see and reason why it doesnt work.


Any ideas?

 

[Yucca]

Its an old pc with onboard intell graphics!