It won't post with 1, 2, 3, or 4 DDR3,s. Apparently, this is a known problem with the Intel DX38BT. I'm sorry I bought this board, and I won't buy another Intel mobo. I'm getting ready to buy a GIGABYTE GA-790FXTA-UD5. I've built 2 pc's with AMD CPU's, and I could make changes to the bios anytime without having to buy another mobo. For now, I'm through with Intel.