I'm getting so tired. No one seems to have the answer or solution on how to solve my issue. Before I had XP Professional and bought 2 Gb extra RAM but realized very fast that since I have 4 pcs of parallell Nvidia Geforce 7950 GX2 graphic boards I can not utilise more RAM under that OS anyhow. So I upgraded - installed Win 7 Ultimate 64-bit and hoped to be able to use my new RAM sticks. Now I realized that my sound board Creative Soundblaster X-Fi Extreme Music doesn't allow me to use more than 2 Gb RAM under this OS to work properly. I've attached some CPU-Z data and a picture of the properties of my computer, (unfortunately in Swedish), but what it says is that I'm just to allowed to utilise 2 Gb of my 4 Gb RAM. (And yes - all RAM has the same speed and are recognized by bios). I'm trapped in a loop of problems - and would really appreciate any advice.