Hi I have a HP Pavilion 15-p028tx Notebook PC Laptop. As far as I know it comes with a NVIDIA 2 GB Dedicated Graphic Card. But when I checked the Properties it says "Total Available Graphic Memory 1792 MB " but the "Dedicated Video Memory 0 MB." I am unable to play GTA 4 because of the same ,kindly let me know if i have to download any Driver or is there some other problem. I have the NVIDIA GeForce 830 M Driver installed. Do i need to make some changes in the settings....PLS LET ME KNOW ASAP. Ty in Advance.