Ardo

It definitely can't be overheating.
Especially with just cause 4 the system shut down immediately, the fans didn't even started spinning. The temperature was below 80°C

Since I couldn't find a power save option I tried to under volt the GPU and that helps a lot.
It didnt fix the problem completely but at least nothing shuts down immediately after start.

I tried it. 
Sadly it didn't work, I still have the same problem.

Thank you, I will try those settings. 
 
I am aware, that my CPU is a bottleneck. I am planning to upgrade the processor next year...

I used a 1050Ti before.
I formatted all drives and have a fresh install of windows.

Memtest didn't show any errors. Pass 100%

I couldnt find a powersave option.
The other steps didnt help.

2x4.
Not overclocked or anything. 
I didnt run memtest yet

Corsair CX750M
I do not think that its a bad PSU?

Update: could not fix it. Returned and bought a 2070.
______________________
 
 
Hello,
I just have upgraded my PC and got an Gigabyte 5700 xt gaming oc.
Sometimes my PC just shuts down during gaming. The problem is somehow similar as in this thread: https://community.amd.com/thread/242928
This problem occurs immediately when I start Just Cause 4. In GTA I cannot complete the first mission without my system shutting down.
During a AIDA 64 stress test on the GPU I got a black screen, but the computer didn't shut down.
I could play Minecraft, Halo Reach and Rise of the Tomb Raider.
After reinstalling the driver (19.12.2) Shadow of the Tomb Raider works too. (before I had 19.12.3 installed and Shadow of the Tomb Raider shut down)
 I played Shadow of the Tomb Raider for 15-20 minutes and ran the benchmark multiple times on High and Ultra. (There I had a couple graphic lags / stutters)
 Since I played all Games (except Just Cause) before, I know that the CPU is not the problem.
 
I also Upgraded the PSU to a Corsair CX750M, it a bit overkill but that does not matter. 
I double checked, everything is plugged in correctly.
 
I reinstalled windows, so there should be no old drivers or anything that interfere.
 
According to the Event Manager the Event  41 happens shortly before the shutdown. 
Two times Event 35 was also in the History (the event 35 is listed 4 times because it occured for every core, but only in 2 out of 13 shutdowns  that Event appeared)
 
 
Motherboard: msi z97 g45
CPU: i5 4690k @4.5Ghz
GPU: Gigabyte 5700 xt gaming oc 
RAM: 8 GB DDR3