I have 16GB of physical Kingston HyperX 1855mhz RAM and my computer tells me only 3 is usable. I have 32 bit win 7 ultimate but no graphics card yet i will be getting that in a week or so. I also will be uprgrading to win 10 when it comes out next month. My CPU is the I5- 4690k and my mob is the Z87 ASRock Extreme 6 Please help me!!