PC only works with one stick of RAM

Alfa66andres · Aug 3, 2015

I've seen that a lot of posts ask this question, but I haven't seen any working answer.

Yesterday, I finished building my new PC, and when i tried to boot, nothing... So i make sure everything is plugged in right, and spend a good hour trying to figure out what is wrong until i try to boot with only on stick of ram (i'm using 2x8gb g.skill ripjaws x 2400) and voila! it boots up. So then i tried with different configurations and i saw that it only works with one stick, doesn't matter which of the two sticks, and doesn't matter what slot you put it in, but it doesn't work with two, (tried it both a1-b1 and a2-b2). Some posts recommended to enable xmp, but that didn't do it for me. So my question is, is there any setting or anything i have to do to enable double channel?
Btw, i have an asrock z97 pro 3 (which is in the list of supported motherboards on g.skill's website) and like i said above, g.skill ripjaws x 16gb (2x8) 2400.My PSU has 500w, and i don't have a GPU, so i don't think that's the problem.

Thanks in advance for reading this post

alexoiu · Aug 3, 2015

I'd try removing the CPU and checking the socket. If pins ok, I'd say that it's either the board, or the RAM kit and I'd RMA them both.

Tradesman1 · Aug 3, 2015

How about A1 and A2? If that works, what CPU cooler - if it's a third party cooler, may be too tight in a corner or side throwing the MC off, try loosening then snug down screw tight

Alfa66andres · Aug 3, 2015

I'll try to remove the CPU, and for the other answer, yeah, i did try every combination with the 2 sticks of ram. I am using the stock cooler that came with the processor, and none of the corners seem too tight.
Thanks for the answers btw

gskill support · Aug 3, 2015

Check the CPU pins of the motherboard to make sure they are perfect. If so, sounds like a defective motherboard that needs to be replaced.

There is nothing wrong with the RAM if they work fine individually.

Alfa66andres · Aug 4, 2015

Huh, seems like I found a solution! I installed both sticks of ram next to one another and it works! I checked everywhere, and the system detects 16gb of ram (2x8gb) at the correct speed, only thing is that in some places it detects it as single channel, but I don't see any performance errors.

Sooo if you're having the same error, try to install one stick of ram in each color of slot (ex. one in gray and one in blue slot)

helpstar · Aug 4, 2015

That's no solution, if you wanna upgrade the ram in the future, you will have the same problem again. Did you check the CPU socket pins of your mainboard?

Update the motherboard bios to 1.80 within the bios itself, not in Windows

gskill support · Aug 4, 2015

Sounds like the motherboard is defective. Get it replaced ASAP while it is easier from the vendor, otherwise you'll need to go through manufacturer which can take longer.

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