Hi I've just installed an AMD A10 6800k quadcore processor and 8GB of ram i've just done a check with pc wizard and it's saying i'm using that (the amd) as a graphics card even though i have an nvidia one plugged in but i don't have the box for the nvidia one does anyone know how i can switch between the two or even use both iif that is possible because i'm pretty sure my nvidia card is a good one! also i just ran a "can i run it" check on battlefield 4 and it faild because it says i have only 3.6GB of ram also Call of duty ghosts wont run because it says i dont meet the ram requirements can some one please help? because pc wizard and the box my ram came out of both say 2x4GB