What is the effect of a power surge on a protected desktop computer?

I am asking because some minutes ago my month-old Lenovo Y700 desktop (running windows 10) suddenly restarted itself. This is the first time anything like this has happened before. No blue screens and no errors.

I know it wasn't due to temperature or strain on my GPU as the only programs I had open at the time were Opera and Adobe Acrobat DC. The only other thing I can think of is a power surge as we've had that once before and it fried my laptop several years back. I've installed a surge protector on the electrical outlet so my question is was a power surge responsible for the sudden restart or should I look elsewhere?

I've attached the event logs here

and here

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