Question Why won't all of my RAM sticks work?

[supra_13]

So I got a new system, swapped my Alienware R4 for a PC. Once home I started doing some cable management and plugged everything back the way it was before (and everything worked because I used the PC before taking it home, and no, nothing could've broken in the way home because I was really careful). After all that, I tried to turn it on and it wouldn't boot, the mobo (Asus Maximus VIII Hero) showed q code 55, which means: no memory installed. So I started searching on the internet about that and some people said that a pin could be bent, so took the cooler out (Corsair H100x) and the CPU out (i7 6700k), looked for bent pins but everything was perfectly fine. I put everything back together and tried again, still didn't work. So I took 3 of the 4 RAM sticks (4x8gb Corsair Vengeance LPX at 2666mHz, overclocked to 3000mHz) out, and just left one in dimm a1, and it worked. I then installed dimm b1, together with a1, and it also worked, but after putting the other 2 sticks and trying to boot, it displayed q code 55 again, so I don't know what could be the problem. Also, when I used it before taking it home it had all of the RAM installed and it was working completely okay.
Thank you for reading and I hope someone can help me, cheers.

 

[Ralston18]

If it all worked the configuration was probably correct.

What may have happened is that one of the RAM sticks failed.

Can you try swapping RAM sticks in one at a time to see if one particular stick is not working.

Try doing so first without overclocking and then with overclocking.

 

[e4r33d]

Swaping sticks around would help , also try to run lets say a set of sticks in each config , so a1 with b1 then a2 b2 , and then swap set's and redo . This would probably answer your problem , if it dosent then it has something to do with the board or the bios when all 4 sticks are in .


Did you take out your motheboard lately or do any upgrade / cleaning that has a reference with you having a screw driver near your motherboard ? If yes check for any marks of you scratching it ( less likely this being the reason )

 

[supra_13]

Well i used a screwdriver to take out the screws from the cooler, it's easier than using my hands, I don't have much space. But I didn't take the motherboard out, so there's no scratching on the back of it. Also, do you think updating the bios can fix it if all the sticks are working?

 

[supra_13]

I'm also going to to clean the contacts from both, the motherboard dimms and the RAM sticks so I know that that's not the problem, and I'm going to run them at their stock clock speed.