New video card installed (r9 290) - the screen was smaller than the monitor, it wouldn't "fill" it up or stretch properly. So I went into Catalyst Control Center and went to fiddle with the under/overscaling under "My Flat Panels" tab. As soon as I opened that tab, the screen filled up to normal and all of a sudden all the color went out of the screen, so I'm stuck in grayscale with no idea what to do. Any ideas?
First thing I'm going to do, which is right now, is re-install driver(s).