B450M Steel Legend fans broken with latest bios£

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   My B450M SL came with P3.30 and I had set a custom fan PWM profile for the chassis fans that started with 3% at 50 degrees (as with my fans that results in 400 rpm) and so on and everything worked beautifully.

Yesterday, I decided I might as well update to P4.20 - update went well, then I did the load bios defaults and an extra restart, then went back into bios to set everything again the way I liked it. 

Thing is, upon restart, my chassis fans run max speed, as if the profile was not saved. If I go back in bios, the setting are there, and the moment I start editing them I can hear they kick in and run the fans at the intended speeds. All is good, until I shut down or restart the PC, when fans run full-blast again.

Any solution to this? Anyone else experienced that problem with the latest bios?

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Mistral Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Jun 2021 Location: Canada Status: Offline Points: 140	Post Options Post Reply Quote Mistral Report Post Thanks(0) Quote Reply Topic: B450M Steel Legend fans broken with latest bios£ Posted: 16 Jan 2022 at 1:23am
	My B450M SL came with P3.30 and I had set a custom fan PWM profile for the chassis fans that started with 3% at 50 degrees (as with my fans that results in 400 rpm) and so on and everything worked beautifully. Yesterday, I decided I might as well update to P4.20 - update went well, then I did the load bios defaults and an extra restart, then went back into bios to set everything again the way I liked it. Thing is, upon restart, my chassis fans run max speed, as if the profile was not saved. If I go back in bios, the setting are there, and the moment I start editing them I can hear they kick in and run the fans at the intended speeds. All is good, until I shut down or restart the PC, when fans run full-blast again. Any solution to this? Anyone else experienced that problem with the latest bios?

Mistral Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 Jun 2021 Location: Canada Status: Offline Points: 140	Post Options Post Reply Quote Mistral Report Post Thanks(0) Quote Reply Posted: 18 Jan 2022 at 10:04am
	Minor update: installing ASRock's "A-Tuning" enables the correct rpm in Windows. That's an OK workaround, but it would be better if things worked right out of bios like before. EDIT: I take the above back, partially. Even with A-Tuning installed, the fan profile only works correctly some of the time... Is nobody else experiencing this issue?

hisnbarg Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 03 Feb 2022 Status: Offline Points: 15	Post Options Post Reply Quote hisnbarg Report Post Thanks(0) Quote Reply Posted: 04 Feb 2022 at 4:55pm
	Similar issue with different mainboard (X370 Pro4); updated to the latest version (7.10) and now chassis fans spin at 100%. I managed to control the fans with SpeedFan, but until Windows is booted up, it's extremely noisy.