8 GB ram, 3,90 usable (hardware reserved) (solved)

Tory3rMurre

Reputable
Jul 23, 2016
5
0
4,510
Motherboard: Asus M5A97 LE R2.0
CPU: HexaCore AMD FX-6300, 3800 MHz (19 x 200)
GPU: AMD Radeon R9 270 (Curacao)
OS: Windows 10 Pro 64bit
RAM: DIMM3: Kingston 99U5584-005.A00LF (2x 4GB modules)

Hello, guys. I am having this issue and I really don't know what to do. My memory (RAM) is 8 GB, but only 3,90 is aviable, the rest is "hardware reserved" (https://s31.postimg.org/i8bl97ykr/Sn_mek_obrazovky_864.png) Any ideas? I am desperate. Thanks.

Picture from AIDA: https://s32.postimg.org/4irme5n37/Sn_mek_obrazovky_865.png

I am also adding complete CPU-Z report if that helps: LINK

Another problem is this strange lag as shown in the video. But it happens really rarely (once in three months). I can do nothing. Just have to restart the PC physically: https://ulozto.cz/live/!ejpUGdnJM/video-2016-07-24-21-58-21-mov