Question PC randomly reboots while gaming, but not during stress test ?

[HonaZak]

Hi.
I built my PC a year ago, and have been experiencing this problem ever since. After a while in game, sudden black screen appears, and reboots into windows afterwards. The only clues I’ve found are a critical error (41 - Kernel-Power) in the Event Viewer and a critical hardware error (193 - LiveKernelEvent) in the Reliability History.

Here are my specs:
MB: MSI PRO B650-s wifi
CPU: AMD Ryzen 5 7600X
GPU: NVIDIA GeForce RTX 4070
RAM: Corsair 32GB KIT DDR5 5600MT/s CL40 Vengeance RGB Grey EXPO
Cooler: Endorfy Fera 5
Storage: Apacer AS2280Q4X 2TB
PSU: GIGABYTE P750GM

Just a few additions:
PC has been to 2 different repair shops, both times returned with no reboots happening.
I have already replaced PSU. I measured a peak CPU temperature of 96°C, but before the reboot, temps are usually around 85°C, so it doesn’t seem like an overheating issue.

I would appreciate any tips or suggestions.

NOTE: this is my second thread on this topic, becuase the first one has died already. Hope thats okay.

 

[gjergjik]

A 650VA UPS typically delivers a real power output of around 390 to 420 watts. Your system's estimated maximum power draw under a heavy gaming or workload scenario is approximately 420 watts.
Remove UPS out of the equation and test.

On a side note, your CPU temps are high. Maybe you should invest in a better CPU cooler.

 

[Aeacus]

Trust, no idea what model it is. It may be this one, it looks exactly like it, mine just has 650VA:

If you have Trust 650VA UPS then it's model is most likely PW-4065T.
Amazon DE: https://www.amazon.de/-/en/15598-Trust-PW-4065T-650VA-UPS/dp/B0012PX7WA

But yeah, it is bottom of the barrel. No info about wattage capacity, runtime, output waveform or even topology. So, at worst; square wave output with stand-by topology. If so, good enough only for robust hardware, like motors.

I did ran one full test in the past. But correct me if I'm wrong, shouldn't trying one RAM stick at a time rule it out? I did that, and it crashed on both sticks individually.

Well, IF both RAM DIMMs are bad, then it doesn't rule out RAM.

Did you try all possible DIMM/slot combinations?
I suggest marking two sticks individually (e.g with sticky note) so you know which is which; afterwards start the testing, which is:

DIMM 1 in 1st slot - tests - yes/no for crash,
DIMM 1 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 4th slot - tests - yes/no for crash,
And 2nd stick too:
DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 2 in 4th slot - tests - yes/no for crash.

While this testing is very tedious, it's only way to confirm RAM issues with MoBo on hardware level.
Ideally, you should see image in all 8 tests. If so, both RAM sticks, will work on their own, in all RAM slots of a MoBo.

Of course, with a RAM set of 2 and when both sticks doesn't want to work together, there would be another set of testing with 2 sticks at once, e.g:
DIMM 1 in 1st slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 1st slot + DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 1st slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 2nd slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 2nd slot + DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 2nd slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 3rd slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 3rd slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 3rd slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 4th slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 4th slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 4th slot + DIMM 2 in 3rd slot - tests - yes/no for crash.
it's pain in the ass to do.
But it is also the only way to test out if 2 sticks of RAM will work together, by trying out all possible combinations.

Isn't there something else that can be overheating?

CPU, RAM (unlikely), MoBo VRMs, MoBo chipset, GPU, PSU and M.2/SSD/HDD drive.

Essentially everything that consumes power can overheat. Though, fans themselves won't overheat, unless ambient temp is way too high (50+C).

To get lower temps, i suggest breadboarding the MoBo. Meaning that you take the MoBo out of the PC case and put it on top of any cardboard box (e.g MoBo retail box does fine). This removes the closed space around components and gives better cooling overall, since your entire room air would act as a heatsink. If you want, you can point a fan or two towards components but this usually isn't needed.

Spoiler: How breadboarding looks like (click here to view)

This is my Skylake build, breadboarded after i bought the components, to make sure that CPU-MoBo-RAM combo works.
Do note that i don't have GPU installed since my CPU has iGPU in it and i used that to see the image.

 

[HonaZak]

If you have Trust 650VA UPS then it's model is most likely PW-4065T.
Amazon DE: https://www.amazon.de/-/en/15598-Trust-PW-4065T-650VA-UPS/dp/B0012PX7WA

But yeah, it is bottom of the barrel. No info about wattage capacity, runtime, output waveform or even topology. So, at worst; square wave output with stand-by topology. If so, good enough only for robust hardware, like motors.


Well, IF both RAM DIMMs are bad, then it doesn't rule out RAM.

Did you try all possible DIMM/slot combinations?
I suggest marking two sticks individually (e.g with sticky note) so you know which is which; afterwards start the testing, which is:

DIMM 1 in 1st slot - tests - yes/no for crash,
DIMM 1 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 4th slot - tests - yes/no for crash,
And 2nd stick too:
DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 2 in 4th slot - tests - yes/no for crash.

While this testing is very tedious, it's only way to confirm RAM issues with MoBo on hardware level.
Ideally, you should see image in all 8 tests. If so, both RAM sticks, will work on their own, in all RAM slots of a MoBo.

Of course, with a RAM set of 2 and when both sticks doesn't want to work together, there would be another set of testing with 2 sticks at once, e.g:
DIMM 1 in 1st slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 1st slot + DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 1st slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 2nd slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 2nd slot + DIMM 2 in 3rd slot - tests - yes/no for crash,
DIMM 1 in 2nd slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 3rd slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 3rd slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 3rd slot + DIMM 2 in 4th slot - tests - yes/no for crash,

DIMM 1 in 4th slot + DIMM 2 in 1st slot - tests - yes/no for crash,
DIMM 1 in 4th slot + DIMM 2 in 2nd slot - tests - yes/no for crash,
DIMM 1 in 4th slot + DIMM 2 in 3rd slot - tests - yes/no for crash.
it's pain in the ass to do.
But it is also the only way to test out if 2 sticks of RAM will work together, by trying out all possible combinations.


CPU, RAM (unlikely), MoBo VRMs, MoBo chipset, GPU, PSU and M.2/SSD/HDD drive.

Essentially everything that consumes power can overheat. Though, fans themselves won't overheat, unless ambient temp is way too high (50+C).

To get lower temps, i suggest breadboarding the MoBo. Meaning that you take the MoBo out of the PC case and put it on top of any cardboard box (e.g MoBo retail box does fine). This removes the closed space around components and gives better cooling overall, since your entire room air would act as a heatsink. If you want, you can point a fan or two towards components but this usually isn't needed.

Spoiler: How breadboarding looks like (click here to view)

This is my Skylake build, breadboarded after i bought the components, to make sure that CPU-MoBo-RAM combo works.
Do note that i don't have GPU installed since my CPU has iGPU in it and i used that to see the image.

I took my mb out of the case, pointed additional fan towards it and it still crashed.

 

[Aeacus]

At this point, i'd try with 2nd, known to work CPU.

Could be that your CPU is damaged, hence why programs crash and PC isn't stable anymore.