AB350M Pro4 Single Channel Ram stuck with 2 sticks

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   Hello everyone,
I bought second ram because I already got money to buy another one for Dual Channel but I found out that I am still rolling Single Channel.
Tried removing and repositioning, running single ram and both are working.
I updated bios and then tried again but with no result.
Bios is running 5.50 and I can clearly see in CPU-Z, task manager that I am running 16 GB but 8.1GB is reserved for system. Task manager is in Czech so I am sorry in advance.

Thanks for answer,
Daniel

My spec:
Motherboard: AB350M Pro4
CPU: Ryzen 3 1200
RAM: 2x8GB Crucial Ballistix Sport LT Red DDR4 2666 (BLS8G4D26BFSE)
GPU: GAINWARD GTX 1060 6GB
SSD: samsung evo 850

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Ecoczdrumercz Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Feb 2019 Location: Czech Republic Status: Offline Points: 5	Post Options Post Reply Quote Ecoczdrumercz Report Post Thanks(0) Quote Reply Topic: AB350M Pro4 Single Channel Ram stuck with 2 sticks Posted: 15 Feb 2019 at 3:56am
	Hello everyone, I bought second ram because I already got money to buy another one for Dual Channel but I found out that I am still rolling Single Channel. Tried removing and repositioning, running single ram and both are working. I updated bios and then tried again but with no result. Bios is running 5.50 and I can clearly see in CPU-Z, task manager that I am running 16 GB but 8.1GB is reserved for system. Task manager is in Czech so I am sorry in advance. Thanks for answer, Daniel My spec: Motherboard: AB350M Pro4 CPU: Ryzen 3 1200 RAM: 2x8GB Crucial Ballistix Sport LT Red DDR4 2666 (BLS8G4D26BFSE) GPU: GAINWARD GTX 1060 6GB SSD: samsung evo 850

Ecoczdrumercz Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Feb 2019 Location: Czech Republic Status: Offline Points: 5	Post Options Post Reply Quote Ecoczdrumercz Report Post Thanks(0) Quote Reply Posted: 15 Feb 2019 at 4:00am
	Sorry for the image. I am still trying to figure out how this forum works.

Ecoczdrumercz Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Feb 2019 Location: Czech Republic Status: Offline Points: 5	Post Options Post Reply Quote Ecoczdrumercz Report Post Thanks(0) Quote Reply Posted: 16 Feb 2019 at 12:00am
	Hello, today when I got more time I tried to take one memory and put it to A1,A2,B1,B2 slot. Then I discovered that my ram is fine but my motherboard B1,B2 ram slots doesn't work. I placed both of my RAM to A1 and A2 and now both of them working. So in the end it was mobo fault. Check the image.