PC rebooting itself

[NixiPixi]

Sorry if this is in the wrong place I couldn't see a 'help' thread!

I bought a "Ultima Extreme Envy V2" Intel Core i7 4770K @ 4.4GHz Overclocked Haswell Quad Core Gaming PC almost a year ago and in the last few days it has been rebooting itself randomly usually about once a day. However today it has done it 3 times, the last 2 times the fan sounded really loud as it did it.

I have checked temps using Speedfan and all looks good. I also cleaned it out to make sure there was no dust causing it. Before this, I did a malware scan and removed any threats and also tried system restore but to no avail.

I have a 2 year warranty with it but wanted to see if there are any ideas on how to fix it myself without having to send it back.

Spec:
Case: Corsair Obsidian 650D with BitFenix fans
Power Supply: Corsair GS 600w PSU
CPU: Intel Core i7 4770K 3.40GHz @ 4.50GHz Haswell CPU
Motherboard: Gigabyte Z87-D3HP Intel Z87 (Socket 1150) DDR3
Cooler: Alpenfohn K2 Mount Doom CPU Cooler
RAM: 16GB DDR3 2133MHz Dual Channel Kit
Graphics Card: Nvidia Geforce GTX 780 3072MB

 

[Vengance]

Could be the psu, had the same symptoms on and old i7. PSU was rated more than high enough, but its age had dropped its effectiveness.

 

[NixiPixi]

Error found in event log after the reboots:

 

[The_Arbiter]

Guys, I have the same freaking issue. What can I do to stop it from rebooting itself so often? Help please

Start a new thread, this one is 6yrs old.

List spec, anything you've changed recently, drivers up to date, any other info that you can add if possible.