Hello
I have four ram slots in my GIGABYTE Z97x-UD3H-BK , i7 4790k processor and two 8GB gkills DDR3 2400 bus Memory sticks, everything was working fine suddenly the pc started not to boot . so I checked what's the problem and found out somehow the last two slots of the four slots are not working ! so the first two slots are only working. I have attached a picture of my motherboard and marked the bad slots with red line.
Now I inserted the two ram in first two slots and the pc can detect them as 16gb and boot properly.
And now question is what possible reason can make this happen? Many of the solutions were to check cpu socket for bent pins I checked with magifying glass and could not find anything suspicious in the socket. and most Importantly the problem occurred suddenly when the cpu was inside the socket and not opened before ..
I know to get a dual channel I must insert the ram in slot 1 and 3 , but slot 3 and 4 are not working and I dont have any idea what to do.