[SOLVED] Computer Restarting Under Low Load (Not Gamming)

[Nmason7665]

First off I'd like to apologize for any incorrect formatting or any errors this is my first time posting something on a forum.

So as the title suggests my computer has randomly started resetting when under light load and is fine when gaming, which is rather incontinent when it comes to school work. I have narrowed it down as much as I can, I know it's not software because I've done an ungodly amount of trouble shooting on that end (Including reinstalling windows which fixed it for about 48 hours if not less). I have also pretty much completely rebuilt the PC and tested other components such as a different GPU and PSU. I have noticed that in the even viewer on the computer Kernel-Power Error Event id 41 gets logged every-time it restarts, which deals with loss of power or crashes. This has lead me to believe my Motherboard might not be providing enough power to the CPU when under low load. Now my problem is I don't know how to rectify that, my knowledge about BIOS' and Power/voltage settings is well, lackluster. I have tried some basic things such as turning the core voltage to offset +0.025, +0.075, +0.100, and +0.150. As well as play with some of the LLC modes but I'm not sure what they do and it didn't make a difference. I'm a bit worried to mess with other settings because I would hate to brick the motherboard and or CPU because I'm not in a position were I can replace them. I was wondering if someone more knowledgeable could help me find a solution.

Motherboard: MSI z370 Gaming Pro Carbon
CPU: i9-9900k
GPU: RTX 2080 Super
Memory: 16gb DDR4 G-skill (Not to sure on speed right now, will update after posting)
PSU: 750w PowerSpec
Storage: 500gb Crucial ssd and 1tb m.2 ssd

 

[InvalidError]

Your PSU is likely dying. It is crashing worse under light load because light loads is where the PSU will be seeing the worst transient loads and those transients are what give output filter capacitors their most intensive workout. When capacitors start going bad either from being low quality, under-sized or getting old, transients exceed the range the VRMs and protection circuitry can cope with and something ends up either triggering a reset or shutdown.

Error 41 is something that gets automatically added to Windows' log whenever the system fails to shut down normally due to power loss, it does not mean much on its own.

 

[Nmason7665]

Your PSU is likely dying. It is crashing worse under light load because light loads is where the PSU will be seeing the worst transient loads and those transients are what give output filter capacitors their most intensive workout. When capacitors start going bad either from being low quality, under-sized or getting old, transients exceed the range the VRMs and protection circuitry can cope with and something ends up either triggering a reset or shutdown.

Error 41 is something that gets automatically added to Windows' log whenever the system fails to shut down normally due to power loss, it does not mean much on its own.

Yeah that's what my original though was to. Although I have a spare 650w Cooler Master that is a little under-powered for my current system but it does start with no problems unless load it put on the gpu and cpu together. The computer would still crash with only YouTube running. I should also add the the PSU isn't even 4 months old.

 

[InvalidError]

One thing you could try before looking for a different PSU to do more testing with is disable C5/6/7 states in BIOS, dial back power-saving settings in Windows and underclock the CPU+GPU to reduce transients on the PSU. With some luck, you'll avoid tripping whatever is causing the reset/shutdown and get an error more indicative of wherever your problem is coming from.

 

[Nmason7665]

Thank you I will look into that and see if it makes any difference it's something I have not tried. Since my original post I found something talking about how VDroop could be going to low and starving my cpu of power to the point is restarts. Although I can't seems to figure out how at compensate for that in my BIOS.