Question Pc only detects one of two ram sticks

Aug 11, 2021
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I'm pretty sure both of them work, because i tested them individually. But when I use them together, only the 4gb one is being accepted by the pc (says so in the task manager and in the control panel, it only says 3.9 gb usable). The computer also had some overclocking issues after installing the new one and I also have to take care of that one but for now, this is the issue.

I tried switching places, cleaning them, and pushing them down real hard, to no avail. I also ran the memtest and it said everything was okay.

It proably has something to do with the motherboard. I'm kinda new to these stuff so an explaination would be nice.

The motherboard is an msi H61M-P20 (g3) if you want to know.