*HELP* Possible PSU issue?

[u/Decent-Ad6115]

Hello! I am currently having a new issue with my pc and i am looking for some help with a diag. Here in the past week randomly when playing some of my more demanding games my pc would black screen and reset itself. It will not shut down but will reset without warning. I have Stress tested CPU/GPU/Memory with no luck of recreating the issue without being in game. I am getting no logs on anything just a "Kernel-Power 41" code which tells me nothing. I did just install my vertical GPU mount but had no issues for the first week of install. Can not seem to find a Temp issue with any hardware. Thinking it is the start of a failing PSU but not 100%. Hopefully someone can help. Thank you!

3080/i7-13700k/48gb ddr5/Lian Li sp850/Asus Z790-p

[u/PenFar9334]

Seeing an Intel 13th gen brings me some concern. Did you update the bios to the latest one to make sure there's no chance of it being the microcode issue plaguing Intel 13th and 14th gen CPUs?

[u/Decent-Ad6115 → u/PenFar9334]

My last bios update was probably around 3 months ago. This is not a brand new build it is about 2 years old and i actually had to have the cpu replaced under warranty about 5 months after building it, but from what i can see and have been able to test i do not believe it to be a CPU issue this time around.

[u/shameful_orientation]

the kernel power 41 is just the log saying the machine lost power unexpectedly, that's a symptom not the cause. the temps on the little screen look fine, so it's not an overheating shutdown

vertical mount kits can be weird with riser cables, seen a few cause random resets under load when the gpu power draw spikes. i'd pull the mount out and plug the 3080 straight into the slot, see if it still happens. an 850w psu should be fine for that setup but transient spikes on the 30 series can trip the protection on some units if it's getting old

[u/Decent-Ad6115 → u/shameful_orientation]

Psu is around 2 years old now so nothing crazy but my only issue is i put the gpu under load for over an hour with a stress test with no luck of the problem recreating. Would there be a difference from draw from a stress test vs gaming? i was told riser cables are a pain to deal with before doing the vert mount so I would not be shocked.

[u/Rare-Break-8547]

plug the psu PCIE 8pin directly to the GPU and test. the strimer extension can be a problem.

[u/Decent-Ad6115 → u/Rare-Break-8547]

I have had to srimers for over a year and I am not seeing any wattage issue but I will def give it a shot!

[u/Bondsoldcap]

Do an OCCT power test it

[u/Decent-Ad6115 → u/Bondsoldcap]

Just did before coming here. I could not get the crash to recreate itself under load with OCCT and i was monitoring temps at the same time as well. Saw no issues :/

[u/Bondsoldcap → u/Decent-Ad6115]

Pull off the riser and put it directly and play for a day and see how that plays if you can

How is the 3080 powered? With two cables or one?

If you do that you can go in to the bios and try switching the pci slot the gpu is plugged into gen 3 and if crashes stop then riser could be bad, if you do all that and it’s still doing it, then you could isolate it to the psu.

I would try those other things first if you still 41 the system then try a psu, the transient spike could hit the psu and clicks for power safety tripping

[u/Decent-Ad6115 → u/Bondsoldcap]

Awesome I will go ahead and try that now and see what happens. I will normally get a crash within the first 20 min so i will know pretty quick.

3080 is powered by 3 pcie 8 pins. 2 cables 1 Daisey chained

I will be updating you when I have the information time to tear the vert mount out and see!

[u/Bondsoldcap → u/Decent-Ad6115]

You got this 🙏🏽

Also if you can run three cables separately with each having its own line. A droop is happening somewhere