I wasn't exactly sure where to categorize this so I choose Windows 7 because as far as I can tell this this is a windows 7 problem. When I built my computer everything was running smooth until about a month later there were grey lines flashing on the screen for half a second and then they were gone so I though nothing of it. Then yesterday the screen started going crazy with the grey lines going across the screen completely covering it up for a solid 3-5 minutes making it hard to distinguish what is happening in the game. As far as I can tell the problem is the worst with Cities Skyline and Minecraft. Also the web browser has the same problem but instead of gray lines its seems like something is zooming across a the screen and then distorting and image. This problem is everywhere except for the desktop and all other applications besides games and the web browser. For reference: Cpu i& 4790K, GPU gtx 980 strix, motherboard MSI M-Power, Ram Corsair Dominator platinum in 16 gb, monitor Philips 242G5DJEB. Thanks in advance.