If your not overclocking the problem is most likely a ram related issue. Boot into bios set the ram to 1.65 and the qpi/vtt to 1.3. In addition, try relaxing the timings to 9-9-9-24 2N/2T. If that solves the problem, you can go back later and test with better timings.
You'll find how to do these things in your manual, very easy.