fuzz0r

You'll need access to a PC to make it. But you can download the Windows Media Creation Tool to make the USB.

I've had the same issue, and it turns out it was the PSU causing it. Switched it out and haven't had the issue since.

You need to boot up with a USB with windows on it, and do a repair. If it can't repair automatically you'll need to enter some commands via the terminal in windows recovery. https://www.lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

Assuming you mean furmark I guess maybe that rules out the GPU as well. This is strange I will give you that. I think you're at a point that if you want to diagnose it you'll need to switch out components one by one until the error disappears.

If you manually set your volt you could've fried the memory. I would try and get a hold of a stick of RAM to try out.

What stress tests have you run? Have you tried stressing the GPU?

How does it run with reset BIOS and only XMP enabled?

Tried updating your BIOS? Could be a problem with the one you're running.

When you say you followed a tutorial does that mean you manually set voltages and multiplier? Or did you enable D.O.C.P?

If your AIO is whining, it could be a defective pump. Are you able to take a short video with the sound? Are you sure it's coming from the AIO?

I don't know if that's the problem. CPU's usually take a while under that load to degrade. If your motherboard is being checked, I'm sure you can figure out if it's the when you get the mobo back.

I don't think that matters when there is a button. You just press it and done.

If there's a button, you press the button.

I'd try the RAM sticks one at a time. To see if one of them is causing it.

Run this one afterwards: https://www.memtest86.com/