Ram slots not working?

[FelixJonez]

Specs:
Ram: ( before failure was 4x4gb hyper x fury 1866 ram. I removed two of the 4gb sticks and added two 8gb sticks) currently: corsair 1600mhz 8 gb stick
cpu-i7-4790k
motherboard: Asus z97 PRO
cpu cooler: corsair h60
Gpu: Gtx 960(2)
powersupply: corsair RM750
intel 520 series 240gb ssd
seagate 500 gb hard drive


I had a cooler master t2 on my i7 4790k and i decided to get a water cooler. I got a corsair h60 and installed it onto my asus z97 pro mother board. Since my brother had two 8 gig sticks, we decided to put it on my motherboard and take two of the four 4gb sticks out. Once Everything was completely setup, I tried to turn on the computer and got an Error 55. Through searching it up, it looked like it was a memory error. I tested different combinations and it ended up only being able to use the second ram slot, the other ones not working. ( all of the other ram sticks work in the second slot. None of them work in any of the other slots) I have already blown out any dust and I have loosened the cpu cooler just incase. There is indeed two bent pins on the motherboard cpu area. Are they the problem? Any guesses as to what happened to my computer and how to fix it?

 

[Tradesman1]

Could well be, that would be my guess. Might be able to straighten them and give it another try