Hello there! First time posting here. But I have experienced the same problem on my folks' PC.
FX-6300, 1060 and some asrock mobo.
Everything was working perfectly fine until Fall Creators update. I'll get into bit more detail. And then - a possible solution.
The error windows is showing me is:
A fatal hardware error has occurred.
Component: AMD Northbridge
Error Source: Machine Check Exception
Error Type: 11
Processor APIC ID: 0
(Any of You guys getting the same error from the event viewer?)
I have swapped RAM, stress tested CPU, GPU, checked SSD and HDD for errors - nothing.
Temps are perfect under heavy load and computer is perfectly stable even after couple hours of gaming, so I believe that the problem is not really hardware-related.
But! The restart usually happens when watching a movie, surfing the net or doing some extremely light stuff. And it would happen every 5 days. It happened today, but before that - it was working perfectly for 7 days. There is no hang or anything like that screen just goes black - it boots back in like 20 seconds and everything is fine. And again - it only started after Fall Creators update.
So I was doing some digging now and I have found something on AMD's forums :
https://community.amd.com/thread/198416
This post:
Hey! I had this problem for a long time and what made it stop for me was going into Power Options, then "Choose What The Power Button Does", then "Change settings that are currently unavailable" then UNCHECK "Turn on fast startup (recommended)" then hit "save changes". SHUT DOWN the computer completely, then turn it back on. Something about that setting causes fatal errors. I hope this helps, best of luck!
I have changed this setting and now I'm just waiting for the results.
It seems that it's working for some people over there
Please let me know if this works, thank You