I made threath about my problem. My compute was using 50% of ram when started up. and i went up to 100% fast when opened something. When it reached 100% i had BSOD. So my computer was pretty much unusable, i went straight to shop and bought new ram. Ram was still at 50%, but didnt it could play games for couple hours with no problems, then again BSOD. I had 4gb of 1350hz ram, which worked fine with my last computer
I had to reinstall my hole windows that day, its been 2 months since that now, i think i had 1 BSOD in that time.
Only thing i have changed in my bios is ram speed to 1600mhz
Ram isnt going more than 80% nowadays, but its still 40-50 always
Here picture what i could dig fast, i'm at work now so its all i can do http://gyazo.com/149f14190cc2747011d85574249c09b9