x470 Taichi Fan detection issues

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   Hi Everyone,
I've recently installed 4 Noctua 4pin/pwm fans and cannot control the speed via BIOS/A Tuning. It looks like the fans are not being detected at all. I have 1 plugged into the CPU Fan 2 and the other 3 in the chassis fan slots.

The bios is showing some crazy readings in the summary such as 655635 RPM for all the fans and are not being detected in A-Tuning/Speedfan. Atuning shows 0 RPM for all fans even though they are going full speed. SpeedFan is only detecting the GPU fan. I've flashed the BIOS to the latest 1.50 as well.

Ryzen 2700x
G.Skill 16GB 3200mhz
RX480
960 EVO NVME

Is this a faulty board? Am I missing a driver? 

Any guidance would be appreciated.

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ebun Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Jul 2018 Status: Offline Points: 4	Post Options Post Reply Quote ebun Report Post Thanks(0) Quote Reply Topic: x470 Taichi Fan detection issues Posted: 30 Jul 2018 at 8:17am
	Hi Everyone, I've recently installed 4 Noctua 4pin/pwm fans and cannot control the speed via BIOS/A Tuning. It looks like the fans are not being detected at all. I have 1 plugged into the CPU Fan 2 and the other 3 in the chassis fan slots. The bios is showing some crazy readings in the summary such as 655635 RPM for all the fans and are not being detected in A-Tuning/Speedfan. Atuning shows 0 RPM for all fans even though they are going full speed. SpeedFan is only detecting the GPU fan. I've flashed the BIOS to the latest 1.50 as well. Ryzen 2700x G.Skill 16GB 3200mhz RX480 960 EVO NVME Is this a faulty board? Am I missing a driver? Any guidance would be appreciated.

Reinvented Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Jun 2017 Status: Offline Points: 113	Post Options Post Reply Quote Reinvented Report Post Thanks(0) Quote Reply Posted: 30 Jul 2018 at 11:34am
	Which fans are you using exactly? This determines what you should be running them at.

Cuba1hr Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 24 May 2018 Location: Croatia Status: Offline Points: 35	Post Options Post Reply Quote Cuba1hr Report Post Thanks(0) Quote Reply Posted: 30 Jul 2018 at 8:12pm
	I have the same issue on X370 Taichi and I don't Know the reason. I was thinking it was some UEFI problem. Max speeds are over 16000, 24000 and 60000 rpm - Noctua F12 PWM CPU fans (no way 0 rpm)and others Arctic 14cm PWMs. Also min voltages = 0??!! I don't believe VRMs were at 96 C. https://ibb.co/cSKQpT Edited by Cuba1hr - 30 Jul 2018 at 8:15pm
	ASRock Taichi X370 UEFI v4.81; AMD Ryzen R7 2700X; Noctua NH-U12S x2 fans; Corsair Vengenace LPX 3000 2x16GB (CMK16GX4M1B3000C15); EVGA GeForce GTX1070 FTW; Corsair RM750i PSU

kerberos_20 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3687	Post Options Post Reply Quote kerberos_20 Report Post Thanks(0) Quote Reply Posted: 31 Jul 2018 at 5:19am
	thats sounds more likely corrupted bios data, try to do full reflash instant flash doesnt flash full bios, only changes something here and there ull need afuefix64.efi file for Aptio V u can find it on ami website or get this one https://1drv.ms/u/s!AipaiVibgFNwqGV-YRwxQ6s-iw7q run it from uefi shell: auefix64 bios.bin /b /p /n /x /k /l justreplace bios.bin with your bios image name if ME changed, then add /me command u will need to power off your pc after its done.
	userbenchmark

ebun Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Jul 2018 Status: Offline Points: 4	Post Options Post Reply Quote ebun Report Post Thanks(0) Quote Reply Posted: 01 Aug 2018 at 11:40am
	Thanks all, I completely stripped everything and put it back together (nothing changed except CMOS reset) and it started working... sometimes a fan or two will completely not spin if I put it on SILENT fan mode. If I put them on custom/standard they all spin at their expected speeds. I honestly have no idea what did it but am not complaining. I even requested an RMA which I don't need now so i'm stoked about that. Appreciate the replies and if I encounter anything else I will come back and try kerberos's suggestion. Edited by ebun - 01 Aug 2018 at 11:41am