Ok guys, I just performed a format on my desktop Pc. I have installed correctly all the required drivers, my network works fine and generally I don't have any problem. Now, when I try to play a video file, I watch a green screen instead of the video. I tried to play all the video file types(mpeg, avi, vob, mpeg-4...etc.) and no results..Only The Green Screen ! I have almost all the media players in my system(Windows Media Player, winamp, Quicktime, Realplayer, NeroShowtime..) and in all I have the Green Screen. Audio works fine, I hear the music of the video but I watch green screen What do you think is the problem in my situation ? Thanks.