Hello,
The motherboard I have is a Giga-Byte GA-Z97-SLI
I have two 8 gb ram sticks: 2400 MHZ DDR3 1.65v
and
I also have two 4 gb ram sticks: 1600 MHZ DDR3 1,5v
I had them working at first, I had the 8gigers in the first 2 slots and the 4gigers in the last 2 slots going from left to right.
Now...