So the last couple of days when I go to YouTube website and click to watch something it tells me that I need flash installed then after a minute or two it starts playing. Not only that but now when I click full screen it zooms in on it and doesn't position itself to the screen size. My screen also dims and shuts down after a bit from no screen touching. It didn't use to do this till recently. Any thoughts? I have the surface Rt btw.