Windows 10: BSOD and PC crashes while playing any games

Pc randomly either freezes, turns itself off and then on immediately on.
happens even while browsing a word document. i usually have youtube playing music in the background so nothing fancy to make it crash

:)

 

KERNEL SECURITY CHECK FAILURE

I'm playing a lot of new games these days.... however some of these seem to crash my pc... That BSOD appears and says "KERNEL_SECURITY_CHECK_FAILURE".

A game (Witcher 3) that worked before updating now crashes too.

I think it is the buggy update. Games worked fine before the update. But for now, any help?

 

BSoD

+ when i play other games i dont have BSoD i think i can recognize it mostly when im playing Division ,Dark Souls 3 these are the most problematic games they were even crashing but i tried to fix this crashes and i think i fixed it(by those steps above
and in game changes +veryfing games files etc) because i can play longer without any crash but it makes BSoD + streaming with OBS.

 

Rule 4No piracy or discussion of piracy allowed at all. Such as software, music, videos and other intellectual property violations (e.g. downloading youtube videos locally etc) - it is forum policy that no help shall be given to people who knowingly steal software or services.One of the main reasons for this is that the act of pirating the software will inevitably change the working of the software and make investigation and repair impossible. Please install a legitimate copy of the software and if you are still experiencing the issue we will be please to assist - No further assistance will be provided until we are satisfied that the software is genuine.