I have been having issues on my computer where when I use around 3 gigs of memory, my task manager says I'm using 50-60% of my total memory. But when I look at my system via the control panel, it detects that I have all 12 gigs. Is there something eating up all my memory that doesn't appear on the task manager, or is my computer just not using all 12 gigs, for whatever reason?
Below are images that may be of help. I would really appreciate any help with this, because I've been picking around for ages and nothing's worked. It's been 3 years, and I hardly even noticed this happening.
Below are images that may be of help. I would really appreciate any help with this, because I've been picking around for ages and nothing's worked. It's been 3 years, and I hardly even noticed this happening.

