i have a visiontek geforce 2. hmm, well, my ram shouldn't be a problem, cus these games never used to crash on my old system. my old system used this stick of ram too. but, i think i might of figured out my problem. my modem driver causes MW 4 to crash once in a while. once i get rid of the systray applet, i don't freeze. but giants still kicks me out to the desktop.