How can i be sure that my system rebooted by BSOD or maybe power outag

Hello. When i was in work, my pc in home rebooted for some reason. Now i am in home. And question.
How can i be sure that was BSOD or power outage?
I check event logs and i find this:


Event[1889]:
Log Name: System
Source: EventLog
Date: 2016-10-16T
Event ID: 6008
Task: N/A
Level: Error
Opcode: N/A
Keyword: Classic
User: N/A
User Name: N/A
Computer: MainPC
Description:
The previous system shutdown at 10:39:41 PM on ?10/?10/?2016 was unexpected.


And there is nothing about:"
The computer has rebooted from a bugcheck. "

So it was not BSOD if i dont find in event log this info:"The computer has rebooted from a bugcheck." ??


Also no MEMORY.DMP in Windows and no minidumps.

No there isnt C:\Windows\minidump , no minidump. But i read stories that even if BSOD it will not raport in minidump


Like here:

BSOD and I can't find the dump file or Event Viewer log entry - Windows 10 Forums