I had a hardware reserved memory, like it says 2.1GB, as my usable is 13.9GB out of 16GB. Is it possible to replace a new 8GB RAM? - Quora
16 GB of ram but only 8 usable? 8 Hardware reserved - CPUs, Motherboards, and Memory - Linus Tech Tips
![How to fix "GB usable" RAM problem under 64-bit Windows (set PCI-E Graphics Card as default in BIOS) - YouTube How to fix "GB usable" RAM problem under 64-bit Windows (set PCI-E Graphics Card as default in BIOS) - YouTube](https://i.ytimg.com/vi/4HbNiCeTU8s/hqdefault.jpg)
How to fix "GB usable" RAM problem under 64-bit Windows (set PCI-E Graphics Card as default in BIOS) - YouTube
![I have 16gb of RAM installed, but it says that only 13.9gb are usable. Can someone explain me why and how to fix it? : r/pcmasterrace I have 16gb of RAM installed, but it says that only 13.9gb are usable. Can someone explain me why and how to fix it? : r/pcmasterrace](https://preview.redd.it/32tbn0gmh9k61.jpg?auto=webp&s=7ee4f3f2081e63b4f76ba89ac0451acf085b884e)