Power cycling on hard shutdown

[Bryan_54]

Hey guys, perhaps you can help me out.
For about the past month or so, this is when it started, if my computer had a hard shutdown, ie power button or power loss, and I tried to bring it back up, it would power cycle on its own.
I'm not sure how it comes back up whether it's me letting it stay off for a bit or randomness Idk. But it will cycle until it hits windows. If it hits windows it won't cycle.
It's not a short with the power button or reset.
I've narrowed it down to motherboard or the psu. Both of which are the same age. About 2 years old.
I have an EVGA supernova 750G2 plus, and a gigabyte z97x-sli motherboard.
The windows part makes me think motherboard, but simple power cycling says psu.

Any ideas or advice? Thanks guys.

Feel free to ask more details.

 

[Bryan_54]

Minor detail, but I'm the type of person who leaves his Pc running for long periods of time, weeks or more, before shutting it down.
This recent issue has made me worse about it.

 

[Bryan_54]

Actually, sorry, it will stop cycling if it reaches the point where I put in a password to turn on, I put that into the bios so it won't turn on without it. It'll cycle, but if it ever reaches that point it will be fine.

I'm assuming this means my mobo is dying.
If that's the case does gigabyte rma if it's been 2 years?

 

[1RuneKing]

Not sure why this posted under my second account, but just commenting so my main gets notified.