B450 Pro4 R2.0 Fan header and No CPU speed control

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   Have done both of those already as explained. ASROCK customer service has decided to RMA the board.

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murtagb Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Dec 2021 Location: Canada Status: Offline Points: 35	Post Options Post Reply Quote murtagb Report Post Thanks(0) Quote Reply Topic: B450 Pro4 R2.0 Fan header and No CPU speed control Posted: 15 Dec 2021 at 10:22am
	Have done both of those already as explained. ASROCK customer service has decided to RMA the board.

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8907	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 14 Dec 2021 at 11:05am
	Dear murtagb, Thank you for the posting. Please download the latest version of the the A-Tuning from below link and install it to try. https://download.asrock.com/Utility/MotherboardUtility/MotherboardUtility(v3.0.425).zip If the issue persist, please boot into BIOS\HW Monitor to adjust the fan speed to check if the behavior is still the same. Thank you, Best wishes, ASRock TSD ASRock Motherboard Utility ver:3.0.425

murtagb Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Dec 2021 Location: Canada Status: Offline Points: 35	Post Options Post Reply Quote murtagb Report Post Thanks(0) Quote Reply Posted: 13 Dec 2021 at 7:44am
	My B450 pro fans are not working properly. CPU_FAN1 runs the CPU however I cannot control the fan speeds in the bios or A-Tune or in SpeedFan. In fact, the fans are not even registered as being seen in A-Tune or in Speed Fan. CHA_FAN1, CHA_FAN2, CPU_FAN2 do not work, only CHA_FAN3 and CPU_FAN1 work. I have tried each fan in each header to check if it was the fan or the header that was the issue. Bios has been flashed to the latest version. Here is the hardware list AsRock B450 Pro4 R2.0 Team Group 1TB SSD AMD Ryzen 7 5800X MSI MPG A850GF 850W 80 Plus Modular Coolermaster G100M CPU cooler Gskills Ripjaws V Series 2 x 16gb DDR4 Coolermaster H500 case with dual 200mm front fans and 1 120mm exhaust fan Besides getting a new motherboard I am at a loss. This was my first build so feel free to hit me with the amateur questions.