So it looks like it was the board after all..... Wow! Well I'm glad you at least found a solution of sorts and being able to still use the old RAM is a nice bonus I guess. If any issues crop up please post again. Best of luck with the new board..So I had enough with that MSI board and bit bullet on asrock x99x fatality. First day with it and new install. So far rock solid. Running all 4 sticks of RAM (even the one that wouldn't show up on the old MSI board) with no issues. I'll update if the freeze comes back but I'm thinking that msi mobo might have been to problem all along. Bad reviews on it =/