Question New system shutting off randomly after hours of gameplay ?

[jivareng]

Hello everyone, I have been using this forum growing up as a kid for my system issues and here i am again, older and wiser yet not enough to solve this one.

My system is relatively new, bought it around august

New parts:
Mobo: Asrock B650 Pro RS
CPU: Ryzen 7 7800X3D
RAM: 4 x 16GB Corsair Vengance DDR5 6000MHz CL30
2 x Samsung 1TB 970 NVMe SSD
1 x SATA 1TB SSD

I had to buy my GPU used, went over and ran tests with the guy and all was good: It's a NVIDIA Rtx 3080TI, hotspot never sees over 90-93c, normal temps at max see 80-85.
My psu is same from my older system (which died) Corsair Rm750x. I ran multimeter tests on it when my old system died and the voltages looked correct.


To put the issue in detail: Playing an intense game for around 6-12 hours causes a full shutdown of the pc. There is no minidump, no event viewer logs apart from (last system shutdown was unexpected).

One key detail that i must add is that I cannot boot the PC again unless I toggle the power switch on the back of the PSU (hopefully that means its a PSU fault).

Also unsure if this harms my brand new system and don't really want it to 😀 Appreciate all of you in this forum for your help to everyone from my childhood to this day.

 

[dev_cyberpunk]

It could be the cpu compound too thin or thick too. See if there is a system log in the bios.

But how did the other computer die?