Question PC Random Reboots in Windows

Sep 8, 2019
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Recently just installed a new motherboard/CPU, and now my PC will shut-off after a certain amount of time. Ranges anywhere from 1 minute to 30 minutes and gives no warning when it will be shut off.

Couple things to note:
Only shuts off when in windows, I can stay in the BIOS for as long as I want and it will not shut off.
I reinstalled a fresh version of Windows 10.
Tried two different power supplies.
Tried two different mother boards.
Tried minimum components e.g. 1 stick of ram, essentials only.
After it shuts off, it boots back up.
All drivers are up to date for both the motherboard and GPU.

I've been trying to fix this for 2 weeks now and I've hit a wall where I don't know what else to do.

Motherboard: Z390 A PRO
CPU: i7-9700k
PSU: Corsair CX 750M
GPU: GeForce 1070
Memory: 16gb Hyperx Fury
CPU Fan: Coolermaster Hyper 212 EVO
SSD: 970 EVO PLUS M.2 Samsung 500TB
Case: NZXT S340 Elite

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