I just installed Windows 8.1 a couple of hours ago since then ive been installing my drivers etc, one problem I have had before when I installed Windows 7. I have a Zotac GTX 770 which im trying to connect my monitor to, but like I said it says "Cable Not Connected". I have installed GeForce Experience and updated the driver from there, I cant find a driver from the zotac website, I really need help otherwise when I play games I wont get a decent FPS, I will only get the FPS in which my Onboard Graphics can handle. Thanks! *UPDATE* by the way its connected by VGA from my acer monitor to a VGA converter of some sort I believe.