[quote=Padme]^ It could be your video card. Try to unplug the cable monitor from the vid card. Cleaning the video card, might help. If you're not sure how to handle it, ask someone who knows. Just in case, this video tutorial might help: http://www.expertvillage.com/videos/computer-clean-video-card.htm[/quote] If this still wont work try also restoring your pc to an earlier day some programs might be affected when you download something on your pc