I decided to start a new thread on this. My board won't post if I have a stick of memory in the blue slot closest to the black one. I'm fine using the B and C channels and the board boots right up. I'm using the Patriot PSD36G1066KH off the Intel approved list with a I920, but I also substituted a kit of Corsair Dominators with the same result. I inspected the slot for damage, and found none. Whenever there is a stick of memory in the Channel A slot 0 the board turns on, then shuts off again, it then restarts, however there is nothing but a blank black screen no beep codes either. I pull the stick and it boots right up again fine. Any thoughts or suggestions before the RMA process begins ??