Weird Computer Screen Behavior, not performance effecting but its weird enough for me to wonder what it is

[sapppppp]

so i started noticing this weird thing happening with my screen a few months ago, every time i try to load up something with a high demand on my system, my screen flashes an image of what was going on, on my desktop anywhere from 2 hours to 6 days ago but once it selects an image from that time frame it tends to stick with a single image most times until a reboot but somtime's it rotates to a newer freeze frame if iv had my pc on for a few days at a time

idk if im just searching the wrong phrases but even scouring google i can't seem to pull up any info on how to fix it or even what could be causing it

pc specs are
OS - Windows 7 Ultimate 64-bit SP1
CPU - AMD Phenom II X6 1045T
GPU - 4095MB NVIDIA GeForce GTX 980
RAM - 6.00GB Dual-Channel DDR2 @ 386MHz (5-5-5-15)
MB - Gigabyte GA-MA785GM-US2H (Socket M2)

my OS does have a weird file structure but i don't think that's the problem cause i had these same issues prior to throwing my Boot sector on a SSD and redirecting my program files to a couple spanned HDD's

 

[helpstar]

check the RAM by memtest.org USB autoinstaller
check the SSD and HDDs with its manufacturer´s tool
check the temperature of the CPU by CPU-Z