I can not view viedo files on my windows media player. I downloaded all the codecs and reinstall my video card driver. With no luck on viewing the picture. However the audio works just fine, I just have a black picture on the screen. I have also tried various players still the same thing the video does not work, but the audio does. This worked until yesterday when my hard drive failed for overheating. Once the computer cooled down everything came back to normal expect I can not view video files on any media player just sound.