Fans not being temperature-controlled in Windows

[Nine Iron]

Just built a new rig around a Gigabyte Z370N ITX and Windows 10 Pro.

I set the CPU fan curve in the BIOS and it behaves correctly. However, when I get into Windows and run OCCT the fan speed is fixed and won't increase with temperature.

I've just updated to the latest (or, rather, later - there being only two) BIOS and it has had no effect. I've tried both PWM and 3-pin fans controlled via PWM and voltage, respectively, to no avail.

Any ideas? I'm going to be OCing this one so I need the fans to work properly!

 

[FTLN]

Did you install any of the gigabyte software ? Maybe the fan software is interfering, a long shot I know but might be worth a check..

 

[Nine Iron]

Did you install any of the gigabyte software ? Maybe the fan software is interfering, a long shot I know but might be worth a check..

Nothing but the drivers has gone in; no utilities.

I'm reading elsewhere that I should be using the OS-level Gigbayte utilities, but I don't want to have OS processes running when the BIOS should be doing its bloody job! Also reading that it's a known issue with the later chipsets... just hope there's a workaround.

 

[Nine Iron]

I can add

a) the CPU fan stops briefly during the Windows loading screen,
b) under the System Information Viewer's Smart Fan Control program (Windows utility), the CPU fan's temp sensor is FAR away from the CPU, at the bottom corner of the board - I'll try and get a picture of this, because it's ridiculous.

Am I getting to the point where I should RAM this board? Never had such faffing with the CPU FAN with anything else I've ever built!

 

[FTLN]

One last question, are you setting cpu fan curves to ramp up based on cpu temp or another temp ?

 

[Nine Iron]

One last question, are you setting cpu fan curves to ramp up based on cpu temp or another temp ?

Definitely keyed to the CPU temperature. Control method set to Auto - it's PWM - and it responds to commands in BIOS.

ETA - tried a couple of different profiles and they all get blitzed once Windows starts up.

 

[Warchild]

Definitely keyed to the CPU temperature. Control method set to Auto - it's PWM - and it responds to commands in BIOS.

ETA - tried a couple of different profiles and they all get blitzed once Windows starts up.

Instead of auto, try to set an upper and lower threshold temp. See if it adheres to that.
I wonder if windows is thinking your software is still installed. Since its not there windows has no idea on config so uses default max 12v parameters.

I'm hearing many many people have issues with Gigabyte lately.

 

[looz]

Sometimes when programs probe for sensors they also mess up configuration, maybe OCCT hasn't been updated for your motherboard. For example HWiNFO messed up my CPU fan curve until a recent patch.

All I can suggest for now is another program like SuperPi for stressing and HWiNFO for monitoring.

 

[Lazlo]

I can add

a) the CPU fan stops briefly during the Windows loading screen,
b) under the System Information Viewer's Smart Fan Control program (Windows utility), the CPU fan's temp sensor is FAR away from the CPU, at the bottom corner of the board - I'll try and get a picture of this, because it's ridiculous.

Am I getting to the point where I should RAM this board? Never had such faffing with the CPU FAN with anything else I've ever built!

The System Information Viever - Smart Fan Control is actually a gigabyte software/utility and (at least for me) overwrites the uefi settings.

 

[Nine Iron]

The System Information Viever - Smart Fan Control is actually a gigabyte software/utility and (at least for me) overwrites the uefi settings.

That's the one I had a problem with - thinks the CPU temp sensor is at the bottom corner of the board AND has the CPU temperature fifteen degrees lower than it really is!