I bought and assembled my computer around a year ago with Intel i5 6600K and Asus Maximus VIII Hero and it being the first time building a computer for me and me being really stupid I bought ram without knowing if it was compatible. I thought my Asus Maximus VIII Hero had a bent pin in the motherboard or at least it looked like one and I shrugged it off and kept putting together the PC. When I got around to putting the ram in (CMK16GX4M4A2666C15R) the pc wouldn't start (note that the ram is 4x4 GB) and I was (as you can assume) upset. I would not believe that the computer wouldn't work so I starting mixing and matching the ram until I figured out that the computer would not start up with all four sticks in. I could only put 2 in at a time and only in the two left hand slots. So I just ran with the computer and it has worked fine for me for the time I was using it but some video games (which this computer is mainly used for) can't run because of the ram requirements or I am not able to run the games server alongside with the game to host for friends. I have the 2 extra sticks of ram and never really wanted to figure out if the ram is incompatible (which I am hoping) or if there might be a problem with the motherboard. The main problem I need solved is I need to know if the ram is compatible with the cpu and motherboard and if you do find it incompatible the problem will end there but if it isn't I am probably going to need some help finding out if it might be because of some BIOS option or something like that. I just really hope I don't have to mess with the motherboard. Sorry if this post is really unorganized I usually just solve problems myself.