[SOLVED] Reboots and voltage drops ?

[luca1980]

Hi folks, I am 99% sure my PSU is dying and I just need a confirmation from you...
Since a few days my PC reboots randomly during gaming and Event viewer records error 41 - Kernel Power.
I checked the voltages and I don't remember what they were like before, but I believe 3.3 and 5 V are quite weak under stress, what do you think?

Thank you!

 

[Lutfij]

Make and model of your PSU and it's age? What is the PSU powering in your build? Please provide the specs to your build in the body of your thread if your sig space holds your specs, since this thread and any relevant suggestions will be moot to the person in the same boat as you're in currently.

 

[luca1980]

It's a Corsair AX860i but it's 6 years old.
The problem started out of the blue so I reset BIOS settings (it was not overclocked anyway) and reinstalled Win11 with no avail.
The rest of the config is:

Asus Z490 Gaming
i9 10850K
Corsair H115 RGB Pro liquid cooler
32 GB Corsair Vengeance RGB Pro 3200-C16
PNY Geforce RTX 3090 Revel
1 TB Samsung 970 EVO NVME SSD
1 TB Western Digital SATA SSD

Temperatures under stress are normal, 60-65C for the CPU and 70-79 for the GPU. The stuff is clean, no dust...

Cheers

 

[luca1980]

Update:
I noticed that iCue reports different voltages... could it be the MB instead??

 

[luca1980]

The same happens when using HWinfo... PSU voltages are OK, MB voltages not

 

[rolli59]

The AXi has problem with the transient load spikes on the 3090.

 

[luca1980]

I am waiting for the delivery of a HX1000, I will report later.

 

[Vic 40]

Running the psu single rail or multirail? Think ICUE->device settings and switch. Using one pcie power cable per connector? Not saying above statement isn't right, but imo it's worth looking at.

 

[luca1980]

It was multi-rail, switched to single and the behavior is the same.
Why do you think there are differences between the voltages at the PSU and at the MB?
Voltage cannot drop like that only because of the cables...

 

[Vic 40]

Hard to say, is about sensors and what is reading them and how well. The Hwinfo tool is usually one of the most accurate.

The RTX 3090 uses 3x8 pin power, all are powered by a seperate cable?

 

[luca1980]

Hard to say, is about sensors and what is reading them and how well. The Hwinfo tool is usually one of the most accurate.

The RTX 3090 uses 3x8 pin power, all are powered by a seperate cable?

Hi, my 3090 has only 2 PCI-E connectors.
BTW I swapped the PSU with a HX1000 and the problem is solved 🤞
No more crashes and much more stable voltages under stress.

The AX860i must have had a hard time with the 10 core CPU and the 3090...

Thank you all

 

[Vic 40]

Seems rolli was right. 👍

Happy gaming!

As edit, there is a "trophy sign" in front of his answer, click it and he gets best answer and the thread is set to solved that way as well. 😉