Windows 10 PC Restarts Without Bluescreen

[Calamity1911]

Specs: 

R7 2700X w/ Wraith Prism Cooler

16GB DDR4 (2x 8GB) OC'd to 3066MHz @ 18-18-18-18-38 

MSI B450M Pro VDH Max

RX 5700 (non-XT)

EVGA 550W G3

 

I noticed this when I was playing GTA V, and my PC restarted itself. I have done some basic troubleshooting on my own, and I know it isn't my RAM overclock or the PSU. I even reverted the BIOS settings to default, and it still happened.

RAM passed Memtest86 with no errors, and when I hit both my GPU and CPU with a synthetic load (FurMark and CineBench R15 looping) it didn't restart. Temps were a little high (80C on the CPU and 70C on the GPU) but it didn't restart. 

During normal usage, it is completely stable (web browsing and stuff). However, when it "crashes" it doesn't bluescreen and nothing appears in the event viewer besides a critical message about how the system didn't shut down cleanly. It just restarts.

The GPU is stock voltages and everything, just with a more aggressive fan curve. 

 

My first thought it a CPU thermal issue, but when I was running it under a synthetic load nothing happened. I don't have any memory dumps, so let me know if you need any more info.

 

Thanks in Advance

 

[shadowstar1000]

How did you verify that it's not a PSU issue? Based on everything you said I'm thinking either PSU or MOBO.

[Calamity1911]

25 minutes ago, shadowstar1000 said:

How did you verify that it's not a PSU issue? Based on everything you said I'm thinking either PSU or MOBO.

GPU reported power draw at ~150W and CPU is roughly the same. GPU reported in Wattman and CPU reported in HWMonitor

[Calamity1911]

45 minutes ago, shadowstar1000 said:

How did you verify that it's not a PSU issue? Based on everything you said I'm thinking either PSU or MOBO.

I also just got done playing RDR2 and it hasn't restarted yet so maybe it's a bug with GTA?