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?

 

[ötzi]

Sounds like you're experiencing transient spikes from your 3080ti which sets of the OCP (overcurrent protection) from the PSU, the 3080's are infamous for this. Can you test with another more capable PSU?

 

[jivareng]

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?

Other computer died becuase asus motherboard. 4 years was straight up impressive with that terrible quality and default overclocked out the wazoo bios.

Sounds like you're experiencing transient spikes from your 3080ti which sets of the OCP (overcurrent protection) from the PSU, the 3080's are infamous for this. Can you test with another more capable PSU?

Great idea, i will try whenever i get my hands on a better PSU, appreciate you a lot for having that much knowledge on common system problems, For the meanwhile, would you say this harms my system a lot or is it okay?

And is it possible to undervolt / underclock my gpu to prevent crashes?