I'm having some issues with OCZ 2x512 sticks. I can get the system to boot with one stick in B1, It won't post (long beeps) in A1, it won't Dual channel (A1, B1 or A2, B2) but it will run in B1 and B2. Is this a mobo issue with my double sided ram, or is this a faulty memory channel? how much...