Games crashing alot after upgrading to Windows 10.

Hello,

I upgraded to win10 from win7 because of the Meltdown loophole thing. And after doing a clean install of windows 10 downloading the latest drivers and updates i started playing games and every single of them crashed. For example Project cars 2 and GTA V when they complete loading the game freezes (PUBG just crashes normally after playing for about 5 mins or so) and my computer locks completely but the sounds don't bug but i can't alt+tab, ctrl+shift+esc, alt+f4 or ctrl+alt+del or do anything else. It takes a while after it locks and the the games just shuts down and the computer works slow and usually steam crashes with the game too. And NVIDIA Shadowplay crashed while playing games too. The FPS on games is still fine. So what could be the problem?

SPECS:
CPU: i5-3470 @ 3.6 GHz
GPU: GTX 1060 6GB (ASUS DUAL OC EDITION)
PSU: 500 Watt Silverstone
RAM: 8GB DDR3 @i think 1333mhz
SSD: Samsung 850 EVO 2.5" SATA III 120GB
HDD: Verbatim 1TB 3.5" SATA HDD
MOBO: P8H67

Thanks
Please help


I didn't find the right solution from the Internet


References:
www.tomshardware.com/forum/games-crashing-upgrading-windows.html
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