How do I change the screen resolution? Everything looks huge, like 640 x 480? Lenovo ideapad laptop, core i7 2.20ghz, Win 8.1 x64, Nvidia GeForce840M, 16GB Ram, 1920x1080 latest 344.75 Nvidia driver. The laptop has dual cards, an Intel and the GeForce. For some games I have to go into the Nvidia con...