Why does my computer suddenly turn off?

Question

Iron

Last night the computer turned itself off again.
There are no errors or notifications in the event viewer during shutdown. After turning on the computer, there is a notification about an unexpected shutdown with the exact time. At this time, there are two strange events associated with some kind of login. While turning off the computer, I did not touch anyone, I just read the site.
What are these events, and what are they connected with?
Win 10 latest versions. The last update was a couple of weeks ago, and it turns off only yesterday. Didn't update anything, and auto-updates are disabled.
Here are screenshots from the event viewer:

Answer 1

Either the cooler zirralsya, or power supply junk.

Answer 2

on wine 10 the same problem was
scrolling through the site and everything is cut down
https://youtu.be/Y0fSjoITqz8
https://youtu.be/k05vhCgVXLk
one of these videos helped
And so I changed the cooler (did not help) and I already wanted to go for a new one bp

Answer 3

Just turned off like this:

Answer 4

It’s almost the same, since I don’t see a small memory dam was about once a month, for no reason, it either just turned off, or turned off at all (when it was), I already changed the card (vidyahu) and the PSU, etc. d. etc. until I did this (found on the Internet):

Look at the voltage frequency of the operative, in the BIOS the voltage on the operative was
-auto (2.7v) set to 2.6v and forgot about it.

So far everything is working and this problem has never happened, of course, when I changed the auto to 2.6v in the BIOS.