Recently upgraded MOBO/CPU/RAM; PC reboots randomly during use

[Zephurious]

My PC silently reboots at seemingly random points when both under and not under load. No BSOD and no error, just a quick fade to black and then boots again with no complete shutoff in between. I attatched a report i was logging in HWiNFO64 in case it helps.

 

Thanks for any assistance in advance!

 

CASE:           iBuyPower SnowblindN450

CPU:           AMD Ryzen 9 3900X (Matisse, MTS-B0)
               3800 MHz (38.00x100.0) @ 3768 MHz (37.75x99.8)
Motherboard:   ASUS PRIME B450M-A
BIOS:          2006, 11/13/2019
Chipset:       AMD B450 (Low-Power Promontory PROM26.A)
Memory:        32768 MBytes @ 1064 MHz, 15-15-15-36
               - 16384 MB PC17000 DDR4 SDRAM - G Skill F4-3200C16-16GVK
               - 16384 MB PC17000 DDR4 SDRAM - G Skill F4-3200C16-16GVK
Graphics:      MSI GTX 1070 Quick Silver
               NVIDIA GeForce GTX 1070, 8192 MB GDDR5 SDRAM
Drive:         WDC WD1003FZEX-00K3CA0, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:         WDC WD10EZEX-08WN4A0, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:         ST2000DM001-1ER164, 1953.5 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive:         INTEL SSDPEKNW010T8, 1000.2 GB, NVMe
Drive:         WDC WD10JMVW-11AJGS3, 976.7 GB, Serial ATA 3Gb/s @ 3Gb/s <-> USB
Sound:         NVIDIA GP104 - High Definition Audio Controller
Sound:         AMD Starship/Matisse/Vermeer - HD Audio Controller
Network:       RealTek Semiconductor RTL8168/8111 PCI-E Gigabit Ethernet NIC
OS:            Microsoft Windows 10 Home (x64) Build 18363.836 (1909/November 2019 Update)
PSU:           HighPower 800w Standard 80 plus Bronze

053121log.CSV

[RAM555789]

What program are you launching when you crash? I can see you have an increase in your memory and GPU usage right before you crash, so it makes me curious what program you are launching that causes the crash and if its happening every time you launch a specific program. It's hard to go off of only 1 single log since you say its happening both under and not under loads. First thing though I would start with is making sure to disable any overclocks you got.

[Zephurious]

I'm running base speeds, no overclock

 

This log is specifically when I was playing Modern Warfare, but it also happens when I browse the internet on Chrome, run 3Dmark, just looking at my files...

 

But then I have also been able to do all of them without it happening as well. That's what confuses me.

 

CPU/GPU Temps seem to Flux around the same numbers so I don't think they're overheating...

 

I was thinking it might be my PSU...

[Zephurious]

I've attatched a log of an instance where i was just browsing files on my pc with chrome and my HWiNFO open

060221log2.CSV

[Zephurious]

Following tip from another forum, I reinstalled windows fresh after disconnecting all but my main drive. (My main drive and boot drives were separated)

However, this didn't fix the issue. Still randomly reboots under same varied conditions after properly installing windows. I find it hard to believe the power supply is at fault (although I know it isn't a reputable brand). Before swapping out the parts for the uprgrade, my GPU/PSU/Drives/all peripherals were working perfectly. Could my new RAM/MOBO/CPU be faulty? They were all brand new.

[Zephurious]

Tested my Ram and CPU with Memtest86 with no errors. Replaced my PSU with no improvement. So now I'm led to believe its my GPU but I highly doubt it, it never had a single issue before...

[Zephurious]

A video of the issue in action:

https://youtu.be/yJ62Bq0TLKc