So I had to reformat about two weeks back, and since then put NL back on my computer and whatnot. Everything is running fine except the sim. Whenever I start up the sim, it doesn't like to stay active I guess? It is still showing but wont let me do anything in it, so I'll just click within the sim, even though it's in full screen mode and it will make the screen flash, allow me to move for a second, and then flashes back out of it.(but still completely visible.) I don't know what it is, I've tried re-installing, I've tried running in compatibility mode, everything I could think of. So if anyone knows of anything else I could try that would be awesome. Thanks.