SpeedFan 4.52 is not detecting any of my system fans. Am I doing something wrong? Is my motherboard not supported?
Motherboard: https://www.gigabyte.com/Motherboard/GA-Z170-Gaming-K3-rev-10#ov
Fans: https://www.bequiet.com/en/casefans/616
The fans are connected to a motherboard's SYS_FAN1 and SYS_FAN2 4-pin headers. enter image description here

1 Answer 1


(You seem to be pursuing this question on various websites.)

In general, your motherboard is problematic to both Speedfan and SIV (example link).

I would suggest first to check that you are running the latest BIOS version, which is currently version F23f released on 2018/03/09. If you wish to update, ensure first that you have backups for everything.

Check to see that your fans are visible in the BIOS. If not, then it is unlikely that Speedfan can do any better.

Latest versions of Speedfan support the new Advanced Fan Control. You might give this a try to see if it can help. Try also SIV to see if it does any better in detecting the fans.

I remark that your motherboard is not listed as being able to change fan speeds (link to list). If you ever manage to make this work, you might consider adding yours to the list.

  • Yeah, I'm really stuck. My main goal is to link sys fans to cpu temperature. I've tried looking for the settings in BIOS, but the setting "Fan Control Use Temperature Input" is missing. SIV software is also missing "select temperature sensor" setting. So I'm just trying to figure out other ways to link the fans to cpu. I'm on the latest BIOS version.
    – Giancarlo
    Aug 22, 2018 at 10:54
  • I can control the speed of the fans both in BIOS and in SIV, but the fans are locked to some motherboard sensor and I can't change it.
    – Giancarlo
    Aug 22, 2018 at 10:57
  • Try to disable fast boot.
    – harrymc
    Aug 22, 2018 at 13:43
  • Why would that change anything?
    – Giancarlo
    Aug 22, 2018 at 14:04
  • 2
    I think I've just discovered the best thing ever: i.imgur.com/8uhnkr6.png
    – Giancarlo
    Aug 22, 2018 at 15:56

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