Hey Guys basically i replaced my mobo and installed 6GB ram However i only get 3.25 usable. Before i changed my mobo since it was faulty i had 4GB ram which ran all 4GB ram. Adding the 2GB total 6GB only allow me to use 3.25GB ram Taking 2GB total 4GB ram allow me to use 2GB ram. I don't know why!! I currently have 6GB ram installed. In bios it says 4024mb , Windows say i have 6GB (3.25GB usable) Anyhelp?