Hi, I just did a fresh install of windows 7 home premium 64bit. I was running it before, but the system was cluttered. My system was running the 4GB of ram that I had before I did a fresh install, but now the system is only recognizing 2.75GB of said ram. Why would it be doing that if the total ram i can have on windows 7 hp64 is 16GB? Any help would be much appreciated.