PC suddenly stops during gaming and monitors turn off one by one with PC still running ?

[somedudez8099]

hello y'all.

I have started noticing yesterday (6-29-24) my pc started to turn off my monitors and then suddenly can only hear audio and cannot access task manager. my temperatures have been decent thus far and i did upgrade my rig not that long ago (will post specs in comments soon) its been smooth sailing till these past couple of days and I wanna say it could be my power supply, but i have no idea.

I did not overclock my CPU or GPU and really only been surfing the web and/or gaming. i have 3 monitors and during gameplay at random my monitors go black and try to come back on, but stay off while i hear game audio with my rig still running. i turn off and on the pc and it works fine till the sudden "crash" happens. i will say i HAVE NOT upgraded my psu during my last upgrades and just wanna know what is causing this issue. please and thank you

 

[rgd1101]

full system spec? include brand and model of the psu

 

[somedudez8099]

Here are my PC specs as of now
Monitor: BenQ ZOWIE XL2411P 24 in. 144Hz Gaming Monitor
OS: Win 11
GPU: NVIDIA GeForce RTX 3080
CPU: Intel i7 13700k 3.40GHz
SSD: Samsung SSD 970 EVO 1TB M.2
SSD#2: KingSpec SSD 2 TB M.2
PSU: 850w ToughPower
Mobo: MSI Z790 EDGE WIFI
RAM: Corsair Vengence 32gb (2 16gb sticks) 3600 DDR5
Tower: Fractal Design Meshy C (Black)
Case Fan(s): Asiahorse FS-N001 120mm (3) (2) Stock 120mm fans
CPU Cooler: CoolerMaster Hyper 212 Halo Gen 2 RGB Lighting (1 120mm fan)