Troubleshooting Intermittent Random Computer Restarts

[Galland1998]

I am having an issue with a new-ish built (4 months ago) PC that has started having random restarts. Prior to about a week ago the PC operated flawlessly.

 

1. I never get a BSOD just a reset that does not seem to be associated with high demand apps like games.
2. Restarts can be hours or minutes apart.
3. It happens just as often in games as when I am just web browsing and watching YouTube.
4. Sometimes (but not always) that when I am going to have a problem the PC starts to lag.
   1. Sometimes the lag is moderate and sometimes the lag is significant. down to sub 15fps in games like Division 2 or World of Warships
   2. When no gaming operations I will notice lag when typing or YouTube videos stuttering.
5. Restarts are accompanied by GPU fans going to Max Speed.
6. I ran a Prime95 Stress Test for 3 hours with no issues (though I did get a restart shortly afterwards with with no gaming or other high demand apps running 
7. The PC is not overclocked and get the same problems in performance mode or normal mode, via the ASRock Phantom Gaming Tuning App, on my ASRock mITX z390 board.

 

I don't think it is a software thing since I did a fresh install to just windows and the up to date drivers hardware drivers (i..e GPU, MB) and the problem still happened.  At one point it happened so frequently that it made it impossible to get all the way through windows/driver  updates with out t a restart.  I took it into Microcenter service and they didn't find a root cause and I think they only did a stress test for 3 hours, re-seat the graphics card and gave it back to me.

 

As far as specs go I have a

EVGA 2070 Super

EVGA SFX650w Gold PSU

ASROCK mITX Z390 Phantom Gaming motherboard

Intel 9700k chip

[Robchil]

did they try with your gpu inside with a PSU with more power too? or did they just remove the watt drain, and testet half your system? 

 

what else do you have connected to your system? . fans usb devices etc? . everything draws power.. maybe upgrade it? 

 

 

[Galland1998]

honestly, I'll I know is that they said that they re-seated the graphics card and didn't see any issues.  I have very low confidence that they did much of anything to be honest.  The problem is intermittent so they may not have actually encountered it during their troubleshooting.  I notice it because I get it a couple times a day.  But since I am teleworking these days I'm always there to see it.

 

Do you think that the frame rate loss could be based on the GPU "losing" primacy for putting out graphics?  Maybe something is going on where the CPU is doing the graphics instead of the 2070 card.  The 9700K is supposed to have some rudimentary graphics capability but probably not enough to run Division 2 at ultra settings.  It might explain why doing a shutdown/restart solves the problem.  That might be clearing the fault that tripped the system.