Hey -
Think I've solved it and hope this can help y'all
This was driving me absolutely nuts, same issue, random power cycling while playing certain games
Thought it was GPU overheating, ruled out
Then thought it was PSU issue, ruled out
Figured it must be a software/net thing due to the error report
Found threads on this error plaguing IT guys going back to 2000
Noticed in my event log that it only began after I had installed NordVPN
Event completely turning off all services and it still occurred
Did a full uninstall and it hasn't happened since
Perhaps some recent driver issue with Windows 10 not playing nice with VPN services (?!)
Not gonna pretend I know why this happens, and hopefully is fixed in the future
Anyway, hope this helps anyone else!