Problems with DIMMB1,B2

Nick2711 · May 30, 2018

Hello everyone!

Bought new PC - msi x470 gaming pro carbon ac, Ryzen2600x, Corsair vengance RGB 3000mhz 2x8gb.

At the beginning, when I built it, i put ram sticks to slots DIMMA2-DIMMB2 as MSI writes in the sheet - all ram was seen by bios and windows but 8gb were reserved by the hardware.

After that I put one stick to all slots - DIMMA1,2 works. DIMMB1,2 - system does not boot and led debug indicator shows ram issue.

When I put two sticks to DIMMA1,2 - all 16gb are available and i was even able to boost speed to 3000mhz.

On msi website it says that for this MB this ram has single size 8gb, whatever this means.

I have contacted MSI support but they did not say anything useful, just that one stick of ram should work in each slot and to contact the retailer.

Did anyone face this problem? Does the reason lies in the broken MB or it is something else and i don't understand correctly.

It's just strange for me, because if DIMMB1,2 slots were broken, I shouldn't see anything when plug in them. But at the very beginning, when i put ram to A2-B2 ram was identified, i just couldn't use half of it and overclock at all.

Hope I have explained the problem well. Looking for your help.

Nick