I had 4GB of RAM and just installed another 4GB. When I go to my computer's properties I see it recognizes all 8GB but I'm still only able to use 3.47GB.
My motherboard is an Asus P7H55-M which is supposed to handle up to 16GB. I'm running Windows 7 Enterprise 64-bit as well, so what might be causing this? How can I use all 8GB?