CPU Fan always running at top speed

Hi!

I'm having problems with the fan of my CPU. It always cycles at more than 3300 RPM and generates some noise. It doesn't matter if I enter BIOS or boot Windows, it always runs at full speed. This is my system:

- Motherboard: AsRock H81M-VG4
- Processor: Intel Pentium G3250, Socket 1150LGA
- CPU Cooler/Fan: Intel Stock E41998-002 "Delta"
- No case fans or GPU fans
- RAM: 12 GB DDR3
- Internal GPU
- Windows 10
- All latest AsRock .INF drivers have been installed

What I have tried already:
- In BIOS:
   - I set the CPU fan from "standard" to "silent", no difference
   - I updated the BIOS to version 1.5, nothing happens. I have also updated to the beta version 1.7 but I still cannot control the fan speed.
- Installed A-Tuning and performed a test with "FAN-tasting Tuning". The table of results show that at 10% the fan speed is 3384 RPM and so on until 100% with 3402 RPM. All the percentages are similar, always above 3300RPM. Changing the points in the graph and clicking "apply" has no effect at all.
- I installed "SpeedFan" to see if I could change something, but nothing seems to have any effect.

Please, your help will be greatly appreciated.

What is the cpu temp?

mcclausky wrote: Hi RLGL. The temp of both CPU cores is always between 35 and 40 C. Thanks.

And when the PC is idle the temp of both cores falls all the tiem between 25 and 27 C, no more. Thanks.

Xaltar wrote: What header do you have the fan connected to? Try it on other headers on the board and see if that will allow you to control the speed.

Hi Xaltar. It was initially connected to the CPU_FAN1 (number 21). Then I followed your suggestion and connected it to the CHA_FAN1 (number 15), and I set the Chassis fan in BIOS to "silent" but nothing changes. The Fan is still spinning at more then 3300RPM. A-Tuning reports the same speed.

Here's an image of my motherboard layout and the headers I mention above:
https://paste.pics/IGN5X

Thank you in advance.

mcclausky wrote: I just bought a new Fan: DeepCool CK-11509: https://www.deepcool.com/products/Cooling/cpuaircoolers/2021/14443.shtml Unfortunately, this new fan also operates at maximum noisy speed. In UEFI settings I selected again "Silent" but it has no effect whatsoever. The "A-Tuning" app shows it's rotating almost at 3000RPM all the time. The "Fan-tastic tuning" test shows almost the same values for 10% and 100%. The CPU temp is always 31. Please, is there anything that can be done here?

Please, can someone confirm that this Motherboard model "AsRock H81M-VG4" just cannot control the CPU Fan speed whatsoever? As I mentioned before, I have tried everything with no success. Is this Motherboard model designed to make the Fan run at top speed all the time?

Thank you.