So i ave 4gb of ram and an ap want 3gb of ram so it can properly run, i cant get 3 only 2 if that because 50% is used for operating system what can i do to allow more ram to be used for it, people have said to me something about how i can move all of that to my hard disk to free up ram but how can i do that? what settings should i have for intitial and max size on virtual memory to allow more ram to be used for the program. And Last question it says only 3.86gb useable how do i make it the whole 4 gb of ram usable because that kills me as well, i am thinkning of upgrading ram but currently got ddr3 4gb and i don't know if i am allowed to put another ddr3 8 gb is it even compatible? thanks all for your help if i get it