pc turns off randomly/restarts randomly

[MoeOriginal6]

built this pc yesterday and encountered these problems:

 

-Plugged in ethernet and pc turned off (as if you unplugged it, but the lights stayed on)

-Plugged in mouse and keyboard and then computer turned off (as if you unplugged it, but the lights stayed on) 

-Launched far cry 3, computer did the freeze noise and everything froze, no blue screen though, just eventually restarted after 30 seconds

-Randomly everything froze and then it restarted

 

Specs

Core i9 9900k (not overclocked rn)

Asus RTX 2080ti Advanced

Asus prime z390-A motherboard

16gb G skill RGB ram ( 2x8gb and yes they are in the correct slots for dual channel)

corsair RM 850x Gold certified

corsair h100i RGB pro

 

 

system temps never got above 60 degrees, and I wasn't doing anything intensive when any of these issues happened (except for launching far cry 3 apparently)

 

I bought from amazon so i can have replacement parts shipped out quick if anything seems defective, but I dont know how to trouble shoot this issue since I don't have any spare parts or anything to use for troubleshooting

 

Edit: I had the motherboard bios running in OC mode (like 4.7ghz) and as of now I turned that off and am running stock

[Turion 2]

Try plugging your psu into a different outlet, something that has nothing on it. I had a similar problem and that ended up being the solution. Also, do you have a red switch on your power supply, if so what is it set to?

[MoeOriginal6]

12 minutes ago, Turion 2 said:

Try plugging your psu into a different outlet, something that has nothing on it. I had a similar problem and that ended up being the solution. Also, do you have a red switch on your power supply, if so what is it set to?

Ok, I will try that. But is the pc and monitor alone enough to be too much? Those are the only 2 things plugged to this outlet

 

and no I dont have that switch

[rEkmAInc1csBnlM6C85H]

Have you tried updating the BIOS?