I spent like a week trying to figure out this fun issue. After tweaking some BIOS settings related to PBO (Precision Boost Overdrive, basically AMD’s auto overclocking) my computer would reboot at random intervals anywhere from 2-28 hours (28 was an outlier, but hey).

I tried:

• Disabling PBO
• Disabling XMP/DOCP
• Resetting my BIOS to factory (minus a couple settings like enabling virtualization)

Finally I found, buried in this Reddit thread, someone mentioning to disable Core Performance Boost, which is what allows your processor to boost beyond its rated speed.

This will absolutely handicap your CPU (and I plan to play around with an all core overclock to make up for it), but it’s been 3 days since I disabled CPB and I haven’t had a single reboot.