Fan Speed problem AM4 bios 4.x

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   Hi,
I had problems with AB350N mini itx gaming Fatal1ty board and bios v4.4. It said in Bios that CPU was directly far above 100 degrees celcius but it was not. Than installed v4.5 which was available. Than my CPU temperature went back to 30 degrees. But now my case fan 1 speed control stays at maximum speed with my 4 pin pwm fan. How can i solve that because bios changing of speeds does not effect it?

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brs69 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Apr 2018 Status: Offline Points: 4	Post Options Post Reply Quote brs69 Report Post Thanks(0) Quote Reply Topic: Fan Speed problem AM4 bios 4.x Posted: 15 Apr 2018 at 4:52am
	Hi, I had problems with AB350N mini itx gaming Fatal1ty board and bios v4.4. It said in Bios that CPU was directly far above 100 degrees celcius but it was not. Than installed v4.5 which was available. Than my CPU temperature went back to 30 degrees. But now my case fan 1 speed control stays at maximum speed with my 4 pin pwm fan. How can i solve that because bios changing of speeds does not effect it?

brs69 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Apr 2018 Status: Offline Points: 4	Post Options Post Reply Quote brs69 Report Post Thanks(0) Quote Reply Posted: 21 Apr 2018 at 3:37pm
	So I returned Artic PST case fan to shop where they tested it and found out to be alright! Though it did not feel right and they where so kind to change fan for Be Quiet pwm 4 pin fan, which works very well. Problem solved for me. Anyway the question stays if there is some problem between Ab350 board and Artic PST technology, maybe I never know.

cristy6100 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 Mar 2018 Location: Romania Status: Offline Points: 269	Post Options Post Reply Quote cristy6100 Report Post Thanks(0) Quote Reply Posted: 21 Apr 2018 at 8:08pm
	Arctic fans are good fans, their latest Bionix models are among the best if not the best 120/140mm fans and come with 10 year warranty, so I doubt that Acrtic has compatibility problems with motherboards PWM headers, instead I think its a motherboard issue here, or just a DOA fan, it happens even to Noctua, I had 2 NF A14 fans fail me after about a year
	Main Rig: AMD Ryzen 2400G \| ASRock Fatality X370 ITX/ac UEFI 4.90 \| Corsair LPX DDR4 2400@3200 1.35V \| Corsair RM650i PSU \| CM ML120L AiO Cooler