I have just installed windows 7 SP1 on my new 64 bit AMD APU. the motherboard has 4GB of ram, andf the "Clickbios" application in windows confirms the presence of 4GB of ram. however, windows only uses 2GB of it. I saw a suggestion to check the resource monitor to see how much was reserved, and that was about 500-550MB. all the remaining portions added to that number added up to 2GB of ram, which is odd. it's activated, so it isn't the license function. MSCONFIG does NOT have the max memory option checked. what is causing windows to not use all of the hardware memory?
to clarify, windows isn't saying "4GB installed, 2GB useable", it's saying "2GB installed"