Question Kernel Power Event 41 resets ?

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ackoman

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Jan 13, 2009
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Hi

A few weeks ago, I was getting regular shutdowns of my PC, which according to Event Viewer were all due to "Kernel Power Event 41" events.

These coincided with when the weather was particularly hot (for this country at least - England). Well over 30 degrees for days on end.

Thinking therefore that it must be temperature related, I decided to buy an AIO cooler for my CPU. With this installed, I had no more shutdowns - so I thought I'd fixed it. However, today it has just happened again - and guess what? The weather is very hot again.

I am convinced that my AIO is doing a better job of keeping my CPU cool than my old air cooler, so I am now beginning to wonder if there is some other aspect of my system which is temperature sensitive.

A Google search of "kernel power event 41", lists a multitude of potential causes. One of them is a faulty PSU. Is it possible for a PSU to be OK at an ambient temperature of e.g. 25 deg C, but not OK at over 30 deg C?

When it crashed today, the PC wasn't even under any significant load. My wife was simply looking at the Internet. However, I play intensive games and they don't seem to trigger a crash - which is another reason why I am suspecting some component other than the CPU, or even the GPU.

Has anyone here had problems of this type, how did you diagnose the cause, and how did you fix it?

My CPU is a Ryzen 5800x, my motherboard is a Asus 570x TUF wifi, and my GPU is a Powercolor RX7800 XT.

Thanks!
 
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My CPU is a Ryzen 5800x, my motherboard is a Asus 570x TUF wifi, and my GPU is a Powercolor RX7800 XT.
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

You state changing the aircooler to a watercooling AIO, please state what you were on prior to the swap. Furthermore, you speak of the heat in your country(which is where?) but what about the ambient room air temps?
 
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Lutfij said:
My CPU is a Ryzen 5800x, my motherboard is a Asus 570x TUF wifi, and my GPU is a Powercolor RX7800 XT.
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

You state changing the aircooler to a watercooling AIO, please state what you were on prior to the swap. Furthermore, you speak of the heat in your country(which is where?) but what about the ambient room air temps?
Click to expand...


Hi

I did actually say what country I am in - England :)

The air in the room where my computer resides was around 35 deg C, since we have no air conditioning, and the room is small and the computer itself has a significant contribution to the temperature.


CPU: Ryzen 7 5800X
CPU cooler: Corsair H100 AIO
Motherboard: Asus x570 TUF Wifi
Ram: 32Gb of Corsair 3200C16
SSD/HDD: WD_Black SN850X HS 1000Gb
GPU: Powercolor AMD RX7800 XT
PSU: Gigabyte UD850GM (purchased in October 2023)
Chassis: Corsair 4000X
OS: Windows 11
Monitor: MSI G274QPF-QD
Bios: 5013

The previous cooler was a Coolermaster MA410M.

Thanks,



include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.
 
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Re:

"A Google search of "kernel power event 41", lists a multitude of potential causes. One of them is a faulty PSU. Is it possible for a PSU to be OK at an ambient temperature of e.g. 25 deg C, but not OK at over 30 deg C?"

Yes. Some threshold circumstances or condition where X is "okay" but "X+1" fails.

Take a look at and compare what is (or is not running) in the background when you use the computer and when your wife uses the computer. [Task Manager, Resource Monitor, and Process Explorer can be used.]

Determine if there are other differences to consider.

= = = =

Hot weather often affects power.

Could be that the electrical power source or path to your location is having or causing problems: voltage drops, frequency variations, etc..

Possibily being made worse if you have your own high wattage devices and/or home electrical system problems.

Very hot weather and very cold/freezing weather are both known to bring out the electrical gremlins.

= = = =

That all said: Do you have all important data backed up at least 2 x to locations away from the PC in question?

Verify that the backups are recoverable and readable.

= = = =

In Event Viewer and Reliability History/Monitor look for other error codes, warnings, or even informational events that may be being captured just before or at the time of the Kernel Power 41 events.
 
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I did actually say what country I am in - England :)
Sorry, I missed that line. 🙏

In order to mitigate the heat tapped in your room, I'd advice opening your doors and windows to aid with cross-ventilation, would help remove the hot air naturally. If that brings your ambient temps down, remove the panels for your case, namely the front fascia to see if feeding it cooler ambient air helps retain the functionality of your system.

I'm going along with the hunch you had about a thermal issue on your platform.

If your system wasn't cleaned internally off of dust and debris , it could impeded your thermals, not to mention your PSU's venting. Is the system resting on a carpeted floor?
 
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ackoman said:
A Google search of "kernel power event 41", lists a multitude of potential causes.
One of them is a faulty PSU. Is it possible for a PSU to be OK at an ambient temperature of e.g. 25 deg C, but not OK at over 30 deg C?
Click to expand...
Kernel Power error is not the cause.
That is consequence for reboot without shutting down first.
Basically any BSOD will cause Kernel Power error to be logged.
ackoman said:
Has anyone here had problems of this type, how did you diagnose the cause, and how did you fix it?
Click to expand...
Check cpu and gpu temperatures.
Turn off automatic reboot on system failure.
When you get BSOD, then make a photo and show here.
(upload to imgur.com and post link)
If restart is caused by PSU, then there will not be any BSOD.

disable-automatically-restart.png
 
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ackoman said:
so I am now beginning to wonder if there is some other aspect of my system which is temperature sensitive.
Click to expand...
Entire PC is temperature sensitive since it is considered as delicate electronics: CPU, GPU, RAM, MoBo, SSD, HDD, PSU. Even case fans have ambient temperature range in which they can operate.
Only thing that isn't affected, is PC case itself. That's only plastic and metal. But high enough temp 250+C, will make the plastic melt and way high temp will bend and eventually melt metal as well.

ackoman said:
One of them is a faulty PSU.
Click to expand...
This is one possibility, since your PSU is between mediocre and good quality. Not the best but not the worst either. Tier B+.

PSU Tier list: https://docs.google.com/spreadsheet...JWkc/edit?pli=1&gid=1973454078#gid=1973454078

I, personally, would go with better build quality unit. For proper PSU for gaming rig, Tier A is proper. Like: Seasonic Focus/Vertex/PRIME, Corsair RMx/RMi/HXi/AXi, Super Flower Leadex Gold/Platinum/Titanium.
Tier A- will do too, while Tier A+ is preferred. (Look the PSU tier list i linked above.)

(My 3x PCs are solely powered by Tier A PSUs. Namely, i have Seasonic PRIME 650 Titanium (Tier A+), Seasonic PRIME Ultra 650 Titanium (Tier A+) and Seasonic Focus PX-550 (Tier A). Full specs with pics in my sig.)

ackoman said:
Thinking therefore that it must be temperature related, I decided to buy an AIO cooler for my CPU. With this installed, I had no more shutdowns - so I thought I'd fixed it. However, today it has just happened again - and guess what? The weather is very hot again.
Click to expand...
Download and run HWinfo64,
link: https://www.hwinfo.com/download/

If you run it in Sensors mode, you can see all the telemetry PC is producing about the components it has. From there, you can monitor temperatures and see if any of them are getting way high (above 80C).

Since while your PSU may be at fault, i still suspect CPU overheating. Because you had issues with that before and once you got an AIO (better cooler), issues went away. But now, with hot weather came back.
I also advise to set all the rad fans at 100%. It will be noisy but keeping your PC running is more important than random reboots/shut downs.

In summer time, and where it gets way too hot over here, i've also increased the fan RPMs in my builds, to keep them better cooled.
 
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SkyNetRising said:
Kernel Power error is not the cause.
That is consequence for reboot without shutting down first.
Basically any BSOD will cause Kernel Power error to be logged.

Check cpu and gpu temperatures.
Turn off automatic reboot on system failure.
When you get BSOD, then make a photo and show here.
(upload to imgur.com and post link)
If restart is caused by PSU, then there will not be any BSOD.

disable-automatically-restart.png
Click to expand...


When this occurs, I don't get a BSOD - the computer just restarts. Does that add weight to the theory that it may be the PSU?
 
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Lutfij said:
I did actually say what country I am in - England :)
Sorry, I missed that line. 🙏

In order to mitigate the heat tapped in your room, I'd advice opening your doors and windows to aid with cross-ventilation, would help remove the hot air naturally. If that brings your ambient temps down, remove the panels for your case, namely the front fascia to see if feeding it cooler ambient air helps retain the functionality of your system.

I'm going along with the hunch you had about a thermal issue on your platform.

If your system wasn't cleaned internally off of dust and debris , it could impeded your thermals, not to mention your PSU's venting. Is the system resting on a carpeted floor?
Click to expand...

The system is clean, as I had a real good go at it when I replaced the air cooler with the AIO. It is resting on a laminate floor. I do wonder whether it would be better if it was brought up onto the desk - with it being underneath, I think some of the warm air which comes out of the rear and rad fans just gets drawn back through the front. If it were on the desk, I think the air being brought in through the front would be cooler.
 
Last edited:
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ackoman said:
It is resting on a laminate floor. I do wonder whether it would be better if it was brought up onto the desk - with it being underneath
Click to expand...
Elevating PC off the floor means far less dust intake. And dust traps heat.

Also, you could improve airflow a bit, when PC case doesn't have that many restrictions around it. But temperature wise, it may be a bit worse, since hot air rises and cold air descends. Though, within room, you could have 1-2C temp diff between floor level and ceiling level.

ackoman said:
If it were on the desk, I think the air being brought in through the front would be cooler.
Click to expand...
Have you tried ramping up the fans? Also, what HWinfo64 says about temps?
 
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Aeacus said:
Elevating PC off the floor means far less dust intake. And dust traps heat.

Also, you could improve airflow a bit, when PC case doesn't have that many restrictions around it. But temperature wise, it may be a bit worse, since hot air rises and cold air descends. Though, within room, you could have 1-2C temp diff between floor level and ceiling level.


Have you tried ramping up the fans? Also, what HWinfo64 says about temps?
Click to expand...

I've ramped up the rad fans and the inlet fans, so far not had any crashes but it's not actually that hot today - they are predicting a heatwave next week so that will be the real test.

My temps in HWInfo64 look fine to me - all apart from my Samsung 970 Evo SSD, where "Temperature 3" is being reported as being 77 deg C, which seems awfully high???
 
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ackoman said:
I've ramped up the rad fans and the inlet fans, so far not had any crashes but it's not actually that hot today - they are predicting a heatwave next week so that will be the real test.

My temps in HWInfo64 look fine to me - all apart from my Samsung 970 Evo SSD, where "Temperature 3" is being reported as being 77 deg C, which seems awfully high???
Click to expand...

Samsung Magician seems to think the drive is fine, it reports a temperature of 47 deg C (which matches what HWInfo says for Temp 1 and Temp 2).

What is temperature 3?
 
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The drive in question is the one that has my OS on it, so presumably is being accessed all the time. The slot for it appears to be in a bit of a dead zone as far as airflow is concerned. The memory sticks block off much of the flow from the front fans.

I wonder whether it would be better if that SSD was in the other M.2 slot, which is underneath the GPU fans.
 
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