Computer Bluescreening Alot

So since i've built my pc in september it's been bluescreening alot, more and more so over the last few weeks.

I always get bluescreens saying ERROR_MEMORY_MANAGEMENT and PFN_FILE_LIST_CORRUPT.

I've talked to some friends and they suggested me to run memtest as my ram might be broken.
I checked all my sticks (I run on 12 gb 6x2 2gb) and all sticks passed fine except for one set of two, when I put those 2 in the computer didn't even want too boot. The other 2 sets passed fine with no errors,...

Computer Bluescreening Alot