Hello, I've had this problem for over a year now, my PC would randomly shut down 1-3 times a day, it was annoying but I lived with it. Now it's happening more and more often and I keep losing competitive matches (Makes me super angry). I don't know why it's happening, at first glance it seems like a PSU problem but I'm not sure if it is, I replaced my PSU around 4 months ago and it's still happening, I have a feeling it's the 24pin connector from PSU to motherboard causing bad touch. Anyone can help my situation?
Hmm it could be any number of reasons. If it's happening while gaming it could be temperature related, are you monitoring your temps at all?
The 24pin seems unlikely, you can pull it out and reseat it a couple of times and if you are still not convinced try some spray contact cleaner (WD40 do a good one,WD-40 Specialist Contact Cleaner) but I'd be surprised if that was the problem.
If you leave the PC on just idling does it shutdown then or only while it's under load?
My Hardware, i5 6600k overclocked @ 4.6ghz, Gigabyte Z170-ud3-x, GTX 1050ti,Corsair 550w PSU. It happens randomly, either when gaming or browsing the internet, I don't think it's temp related I have a corsair h110i v2 watercooler, temps are usually below 65c.