And I'm seeing TOO MANY pleas for help like this. That out of the way I'd like to see what PSU you used. I want to see a nice large single rail model.
But here's the deal, I'm reading too many posts like this. Make it a warranty issue.
My new PC build has been giving me an error that I cannot get to the bottom of. It will run smoothly for a time (anywhere between 24 hours to almost a week) and then suddenly shut off. When I try to turn it back on it wont even post and will give me Q code 8. If I let it sit for another few days eventually it will let me turn it back on and then this problem will happen again.
Here are my specs:
AMD Ryzen 7 1800X Processor
Corsair LPX 32GB DRAM 3000MHz C15 Memory Kit for DDR4
Samsung 850 EVO 1TB 2.5-Inch SATA III Internal SSD
ASUS ROG Crosshair VI Hero AMD Ryzen AM4 DDR4
EVGA GeForce GTX 1080 Ti FOUNDERS EDITION
NZXT Kraken X62 All-in-One CPU Liquid Cooling System Cooling
Things I have tried to do to fix it:
Removing all components, one at a time, to try to identify the issue
Replaced mobo with new
Flashed bios
Cleared CMOS
Reduced backplate pressure on CPU
Checked CPU for bent pins, etc.

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