Have you tried playing videos with VLC media player?
You can get it here
You might also want to try updating or reinstalling the video drivers for your system.
You should be able to find the relevant drivers from here.
In ANY windows player I get sound, but I cannot playback videos (any format). I uninstalled windows media player and reinstalled it, I installed many codecs..... but now I realize that is not a codec problem.
display device:Mobile intel 4 series express chipset family
Guys plz help...
messing up with this probem for around a week..