Speed Fan Software not detecting Fans

2 weeks ago I built a PC with new configurations, but today I decided to change the fan speed for my pc case. I have 4 fans on my casing, 3 on the front and 1 at the back. If I am not wrong the front three fans are called aux fans and back one is called system fan. So to change the speed I downloaded the Speed Fan software and on the reading menu I can see its only showing the RPM of the CPU fan and not the other 4 fans, it's basically showing 0 RPM for those. I am not sure why this is happening Note: It is showing me the speed of my CPU fan and with the help of the software I can change the speed of it too. Can anyone please tell me why it's not showing or what I need to do so that it shows over there?

2 Answers

SpeedFan has limited chipset support. There's a support page with the supported chipsets listed here

It's likely yours isn't on the list. If your chipset isn't there, all you can really do is appeal to the authors of the application to add support for your chipset in a later version.

Here is a summarised answer:

Sometimes SpeedFan doesn’t detect fans, be it CPU or case fans. In this situation make sure that you have installed the latest version of Speedfan and BIOS.

Once you update, then check if SpeedFan supports your motherboard chip. After that, you need to go into BIOS settings to bypass the CPU fans.

In BIOS under the Power tab, you will see the setting for ACPI suspend type. Change it from S3 to S1 and save the changes as a custom default. Then press F10 to exit from BIOS. It should resolve the Speed fan not detecting fan problems.

Simply downloading SpeedFan and hitting the UP arrow will not increase your PC fan speed. For that, you have to configure your PC.

Just click on the Configuration button and then on the Advance tab. Now select your motherboard chip from the drop-down menu. Here you should be able to see PWM 1 mode, PWM 2 mode, and PWM 3 mode. Click on any one of them and set it to Software controlled. Tick the 'remember it' box and hit OK. Now if you click on the up or down arrow button, your PC fan speed will change accordingly.

download your motherboard specific software from this website

and heres your motherboard details

apparently it uses a AMD Promontory B450 chipset.

Hope it helps! if not just comment and I'll keep trying for other fixes.