So I recently installed the 7770 Ghz Edition into my old Studio XPS and it seems to work fine and all, it loads games properly, just the problem is the video card visual inputs (DVI, HDMI) don't work. My motherboard card works, but the games are very laggy and have a bad fps (5-15 on BF3 on all lowest setings). They don't display anything at all, my monitor just says "no signal." It's brand new too, so I don't know what is happening.