Just come across an issue. Most of the time the media pc is running Media Centre, but sometimes when we say, alt-tab out and use Firefox to load something up on Youtube, we'll keep Media Centre minimised because we're using the nice feature that 7 has in rotating desktops. I have close to twenty 1080P wallpapers rotating, based on games or films that we like. Recently however, it seems to get stuck, and would just get a black screen. When I clicked on any of the wallpapers in the high-res folder, none of them worked, and neither did any of the default Windows wallpapers. So, I tried Solid Colours and chose teal. Teal came up as the background. Weird, I thought. So, I resetted and told 7 to use the rotating desktop with the high-res folder again. It worked... until it got stuck again, but this time it went straight to the teal desktop instead of black... any ideas? It just keeps getting stuck now, so I've just told it to choose one wallpaper and stick to it. Very annoying.