I started to have a problem with my card specially on youtube. On certain links, it displayed only the sound a green screen. When I right-clicked on the window and chose "flash player settings" and check off "enable hardware acceleration" and then refreshed the window, it worked fine. I than changed my card. I had an EVGA GTX560 1K and now I have a MSI GTX560TI Twin FROZR 2K. It's giving the same problem though. I tried OCCT Perestroika for checking out errors but nothing comes up. What else could possibly be the problem?