Logging off and on to system crashed Windows 10

[worry]

Monitor:AORUS AD27QD
Cpu: i7-9900K stock 4.7 with Noctua NH-D15
Gpu: Rtx 2080 Ti Aorus Xtreme Waterforce ( stock no oc,temps max 63C on load )
Ram: 32gb 2x16 GB DDR4 GSKILL 3000MHZ XMP
Psu: Seasonic Ultra Prime Titanium 850W
mb: Asus Prime Z390-A
SSD: Crucial 1TB
HDD: WB BLUE 1 TB
Case: Cooler Master Cosmos C700P

 

 

Hello have an question.After 21 hours when i click Exit to main menu in  Metro Exodus it crashed to desktop, after black screen, there was an circle instead of arrow,and i was not unable to do anything. So i make CTRL ALT DELETE logged from system and logged back in again, and then reboot happened. Can you explain me why?
Just logging again to system something messed up.

 

I checked event logs: There was KERNEL 41,no bugcheck. But only file was created. C:/windows/livekernelreports/pow32kwatchdog.dmp