Help with RAM
Help with RAM
Check the page: https://appuals.com/windows-10-wont-use-full-ram
If it's in the wrong socket, it wouldn't run dual-mode, though it should still be usable. There could be damage involved. Look at my link—it might be a wrong Windows startup configuration.
I would make sure your BIOS is fully up to date, and then see about running memtest on both sticks of RAM. You either have a bug, or a bad stick of RAM.
https://www.msi.com/Motherboard/support/...AMING-PLUS For details. The current release is 7B79vAG, updated in November 2019. Begin with the update to that version.