PC Restarts when idling - Kernel-Power 41

[Simon Bruun]

Hi 

 

A little while back my PC started to make seemingly random reboots. 

It is all very non dramatic, no BSOD, weird sounds, or problems booting back up again. 

I just feels like someone hit the reset button. 

 

It has been going on for a while now. 

The main common factor is that it always happens when I don't use the PC. 

I don't remember it happing even when something as basic as watching YouTube. 

It could happen after I close a browser, and nothing left but my desktop - boom restart. 

So it is sort of not that annoying, and why it had taken me a while to look into it. 

 

It totally feels like some sort of energy saving thing that goes bad.

Like the PC figures it has nothing to do, so it clocks down and whatever other things it can do to draw less power.

I have looked a little bit into this, but haven't found anything obvious here. 

My Win10 power settings is set to Ultimate Performance.

 

I cannot say this this 100% certainty, but it might have started after I installed a new main drive and did a long due reinstall. 
The new main drive is a wd black sn850 2tb.

 

I've looked in the event log, and see a Critical Kernel-Power 41 when this reboot happens. 

Most of the solutions I've found so far has been around power settings, and make sure sleep, fast-boot and harddisk shutdown is turned off. 
And while I agree, I really feels like it has something to do with this, I also think I covered these things, but please make me double check if you also think this is the problem.

 

My system:
Board: ROG Crosshair VIII Hero 
CPU: AMD 3900x
GPU: nvidia 3090
Main disk : wd black sn850 2tb
old main, now secondary fast disk: nvme 970 EVO 1TB
Storage: 4 x SATA SSD 850 EVO 1TB

 

Thanks