Got my B3 Extreme6 from newegg and swapped out my perfectly working from first boot B2 board and at first the system wouldnt boot/post so I took out a stick of ram and it posted...I put in both sticks in the white slots like I had it before and it doesn't boot? You guys have any ideas/suggestions? Board has 1.5 BIOS.

Ram is 2 x 4 GB Corsair Vegance 1600MHZ