What did you have for a previous video card? Also what resolution are you trying to play at?
One thing you can try is download driver sweeper from majorgeeks. Once installed reboot into safe mode - delete all your NVIDIA/AMD(if any) drivers and reboot once more. Re-install the latest drivers from www.nvidia.com Do not use the drivers that came with the card itself. Also what motherboard do you have? In fact list all of your parts model names and numbers, the whole enchilada.