PC shutting down to blackscreen/power cycling while playing Overwatch

Apr 4, 2018
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I have a self-built pc (details below) which shuts down mid-game while specifically playing Overwatch (it's probably the most demanding game on my PC right now). It's around 4-5 months old at this point.

I recently changed my power supply to a Corsair RMX 850w as a possible solution, but the issue persists. After some more digging, I changed the thermal paste which also failed to solve my issue. I'm dreading the idea that there's an issue with my GPU or CPU specifically, so I'm hoping someone can offer other possible solutions that might fix things before it comes to that.

I've checked temps with core temp and CPUID HWMonitor and nothing struck me as alarming. Around 60C for all cores and 65-70C on the GPU. I'm not really adept at troubleshooting so any help would be appreciated at this point.

Thanks in advance!

CPU: i7-7700K Kaby Lake @ 4.20GHz
GPU: NVIDIA GeForce GTX 1080Ti
OS: Windows 10
RAM: 2x 16GB (32GB)
 
that's a power problem. the gpu is out of the picture since it wouldnt cause a loop like that. you already swapped power supply so that's out. i'd consider doing an rma on the motherboard. perhaps call the manufacturer and get their suggestion. they will most likely recommend the same after you do some troubleshooting with them.
 
Apr 4, 2018
2
0
10


I'll take a look at it and hope against hope that it's something I screwed up and can fix on my end...Never thought it might be the mobo itself.
 
probably nothing you did but it would be good to check your connections. i had a faulty mobo i replaced last week. for almost three years it made my machine powercycle on a cold boot until i turned the psu switch off, drained the power and then it booted normally. i only found out last week 3/4 pcie slots were dead. there was also a light on the board that would never turn off and the manufacturer could never tell me why it was on or what it meant. have an asrock z97 oc formula. tried replacing psu and gpu as well. replacement motherboard works like a charm.