I have recently downloaded CS:GO for my HP a4311f and when I first ran the game it gave me an error message saying "your graphics hardware is unsupported for this game". I am able to run the game, but its lags a lot even on the lowest graphics setting. I am wondering what would be a good graphics card for me to get that is less than 90$(if possible).I currently have NVIDIA GeForce 6150SE nForce 430 onboard graphics and my computer has an available PCI EXpress x16 slot(i think that its 2.0). My current psu is stock and 250w, but I can upgrade if needed. Any help would be appreciated. Thanks!