I'm kind of stumped here. The other day I wasn't able to play video files at all. I haven't done anything out of the ordinary and scanned my computer with AVG and everything is on the up. I tried to open the files with windows media player and GOM player and only get audio. However, when I open the video files with Windows Media Center, they work! I downloaded XP Codec pack and still no progress. I prefer Windows Media Player and GOM over Windows Media Center but I'm sticking to what works right now. Does anybody have any suggestions or ideas? I Have Windows Vista. Thanks in advance.