Windows 10 Shows Installed 8GB RAM but only 3.95GB Usable - CPUs, Motherboards, and Memory - Linus Tech Tips
8GB RAM installed, but showing only 3.98GB usable [Solved]
SOLVED] - 12GB RAM (3.98 usable) | Tom's Hardware Forum
How to fix: Only 3.25 GB Usable of 8GB Installed RAM. - wintips.org - Windows Tips & How-tos
I have 8GB of RAM installed, but why can I only use 6GB? How do I fix it? - Quora
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How to fix "GB usable" RAM problem under 64-bit Windows (msconfig) - YouTube
Windows 8.1, only 3.95 gb of 8gb ram usable, please help. 64 bit OS. : r/gaming