Hello,
I've been struggeling with a issue for a while, which is that one off my ram sticks (both 4GB and the exact same model) is "hardware reserved (4.5GB)" and is not even detected in my bios.
Which has a massive impact on my preformance not only do i have only 3.5GB usable ram but I'm also using a APU at the moment which for the people that may not know uses your ram as vram.
(I have ordered a GPU rx470 on black friday but its still being shipped). I fixed this problem a while back by removing the ram stick that wasnt working and adding a functioning ram stick from my brother booting the pc then shutting it off
and removing the one from my brother and adding the ram stick that wasnt working again which appeared to have fixed it (7GB usable 1GB hardware reserved and also 8GB detected in bios ). But it has returned to 3.5GB usable again and 4.5GB hardware reserved and only 4GB detected in bios.
DxDiag.txt