Question System Fans Run Full Speed in Windows

Jun 30, 2023
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Everyone,
I noticed that after a dusting of my pc that the system fans run at full speed when running windows and run at set speed in bios. I have tried to reset cmos and bios settings and checking all connections. I am not sure what else there is to do to fix the issue i do not have software for controlling fans installed. Thanks
 
Update your post to include full system specs and OS information.

How was the "dusting" done?
Used air, I have a shop vac with exhaust and use it as air to dust, and hold fans from spinning while dusting. I wiped the case down also. I did check and every connection was as it should be. The fan curve works in bios, the fans go to full speed when in Windows.
 
System specs?

= = = =

Just as a matter of elimination run "dism" and "sfc /scannow".

FYI:

https://www.windowscentral.com/how-use-dism-command-line-utility-repair-windows-10-image

https://www.lifewire.com/how-to-use-sfc-scannow-to-repair-windows-system-files-2626161

My thought being that the shop vac caused an electrostatic spark that, in turn, resulted in corrupted files.

Bit of an overall stretch (i.e., why just fan speeds?) but no harm in looking for and fixing corrupted files.
I’ll try the scan utilities and see what it finds, the only difference from cleaning this time is that this is the first time I unplugged it since updating to windows 11.
Thanks
 
I’ll try the scan utilities and see what it finds, the only difference from cleaning this time is that this is the first time I unplugged it since updating to windows 11.
Thanks
B450m msi pro VDH
Ryzen 5 2600
RTX 2060
650w PSU
16gb 3200mhz DDR4

I’ll try the scan utilities and see what it finds, the only difference from cleaning this time is that this is the first time I unplugged it since updating to windows 11.
Thanks
 
System specs?

= = = =

Just as a matter of elimination run "dism" and "sfc /scannow".

FYI:

https://www.windowscentral.com/how-use-dism-command-line-utility-repair-windows-10-image

https://www.lifewire.com/how-to-use-sfc-scannow-to-repair-windows-system-files-2626161

My thought being that the shop vac caused an electrostatic spark that, in turn, resulted in corrupted files.

Bit of an overall stretch (i.e., why just fan speeds?) but no harm in looking for and fixing corrupted files.
Specs are
B450m msi pro VDH
Ryzen 5 2600
RTX 2060
650w PSU
16gb 3200mhz DDR4
I tried to run the repair scripts and nothing changed. I also tried to install windows on another ssd and it seems to do the same thing. Might need to get another board and or psu
 
Also take a look at the motherboards fan connections.

This motherboard?

https://download.msi.com/archive/mnu_exe/mb/B450MPRO-VDHMAX100x150.pdf

[Verify that I found the applicable manual.]

Read the entire manual and ensure that all connections are correct and fully in place.

Specifically look at physically numbered Page 15 regarding Fan Connectors.

Check pins and connectors. Also note the reference to the BIOS fan speed setttings.

Basically a doublecheck on much of what you have done. However, you may discover some previous error of omission or commission.
 
Also take a look at the motherboards fan connections.

This motherboard?

https://download.msi.com/archive/mnu_exe/mb/B450MPRO-VDHMAX100x150.pdf

[Verify that I found the applicable manual.]

Read the entire manual and ensure that all connections are correct and fully in place.

Specifically look at physically numbered Page 15 regarding Fan Connectors.

Check pins and connectors. Also note the reference to the BIOS fan speed setttings.

Basically a doublecheck on much of what you have done. However, you may discover some previous error of omission or commission.
This is my motherboard
https://us.msi.com/Motherboard/B450M-PRO-VDH/support#bios
I will go through and double check I may also remove the splitters
Thanks
 
So it double-checked my motherboard and found that there was a bent pin touching another pin. I bent the pin back and reseated all the connections and my GPU and everything seems to be normal now. May have been a short sending signal to the board.

Thanks again for the help.