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  1. #1
    ROG Enthusiast Array
    Join Date
    Nov 2018

    Bios fan control won't adjust 1 fan anymore?

    Hi. I have a maximus xi formula. All fans were working fine. I had to do a cmos reset to clear some settings and start fresh. Now 1 of my fans in "Chafan_1" just spins at 1200rpm all the time. Won't adjust. I've run the fan optimiser in bios and in fan expert 3 but still no luck. In fan expert curve editor it shows the fan as NA because I think bios has it locked tp 1200rpm.

    It's a 3 pin 120mm nzxt fan. Was fine before and could be adjusted

    Anyone know how to fix?

  2. #2
    ROG Guru: Orange Belt Array Abaidor PC Specs
    Abaidor PC Specs
    MotherboardRampage VI Extreme
    Memory (part number)F4-3600C17Q-64GTZR | Trident Z RGB 64GB
    Graphics Card #1Asus Strix 1080Ti OC
    Storage #1Samsung 960 Pro 512GB
    Storage #2WD 10TB Gold
    CPU CoolerEK Rampage VI Monoblock
    CaseC0smos 2 Modded
    Power SupplyCorsair AX1500i
    Abaidor's Avatar
    Join Date
    Dec 2017

    On my Rampage VI Extreme any BIOS over 1301 can't properly control my High Amp Fan Header with 9X Corsair ML140 Pro fans.

    1603 can't even spin the fans down....1503 works but not at PWM mode that 1301 works...only in DC mode and can't really adjust the curve anymore. If I touch it then Q-FAN loses control.

    This happened after a BIOS update too.

    So I second that...did Asus change something in Q-Fan software???
    Asus Rampage VI Extreme | i9-7940X | 64GB Trident Z RGB 3600 | Asus Strix 1080Ti OC | Samsung 960 Pro 512GB | WD Gold 10TB | WD Red 4TB X 2 | PSU Corsair AX1500i | Custom Water Loop - RAD MO-RA3 420 Pro | EK Monoblock | Phanteks GPU Block | Heatkiller 200 Tube RES | EK Dual D5 Revo Pumps | 9 X Corsair ML 140 Pro Fans on RAD | | Bitspower Fittings Black Chrome | Cooler Master Cosmos 2 Modded Case | Silent WIngs 3 120mm Intake |

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