Ram fail

[Sharkyq]

Hi. So i got a problem with my ram.. Built a pc on my own, motherboard is MSI B450 tomahawk max, Cpu AMD ryzen 7 2700x 16GB 2x8gb kit of 2 ram g. Skill ripjaws and Nvidia GTX 1060 6GB.. 

 

The issue is when i put the rams in each Chanel it says that i have installed 16gb ram but usable is only 8gb.. When i put them both in 1 Chanel it says that i have all 16gb of ram but it makes error on turning on the pc that i have to move one of ram back to second Chanel.. What could be the problem and what Should i do? 

 

Thanks for help :) 

[colonel_mortis]

Moved to Troubleshooting

[dizmo]

Have you tried each stick individually?

[Sharkyq]

Yes i tried, both have same 8gb ram usable.. I tried even overclocking them but it still do the same.. Even when i turn on a-xmp it still shows that i have only 8gb of usage on ram... I don't know how to fix this problem