So I put two sticks of RAM in my system. I was under the impression that DDR was enabled automatically with 2 sticks in the memory 1 and 2 slot. When there are two sticks in those slots however, I get error codes on bootup. The sticks have to be put in 1 and 3. Both of the sticks are of the same make/model/manufacturer (OCZ). Is DDR something I have to enable?