Recently I bought a new HP probook g1 with HD 7640G integrated + HD 8750M 2GB and 4Gb RAM but when i started playing games on it and try doing something in the internet in the background(btw i play League of Legends only for information) and my laptop laggs and it was strange because the laptop is better than my desktop computer and i dont have such problems with it. So I saw that my laptop uses only 2gb ram out of 4gb and i think that the integrated video card is using ram and i want to disable it from bios or at least reduce amount of ram used by it but when i enter bios i cant find anything about integrated video card or so. My bios version is 68CPE ver.F.28.