F5F Stay Refreshed Hardware Desktop PC fans operate properly only when they're not attached to the motherboard.

PC fans operate properly only when they're not attached to the motherboard.

PC fans operate properly only when they're not attached to the motherboard.

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sasha9
Junior Member
16
03-18-2022, 12:49 AM
#1
Hello everyone. I have a functional build and am attempting to upgrade the fans. I currently use Asus ex-b150m-v3 I7 7700 ROG Rtx 3060 OC12gb, which works well with basic 3-pin case fans that are recognized in BIOS. I'm planning to switch to Corsair RWF0041 RGB fans (non-RGB) but they don’t spin and aren’t detected in BIOS when connected via the chassis fan plugin on the motherboard. However, once I connect them through a fan splitter and power it from the PSU, all three fans operate at full speed. Someone might know why this happens?
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sasha9
03-18-2022, 12:49 AM #1

Hello everyone. I have a functional build and am attempting to upgrade the fans. I currently use Asus ex-b150m-v3 I7 7700 ROG Rtx 3060 OC12gb, which works well with basic 3-pin case fans that are recognized in BIOS. I'm planning to switch to Corsair RWF0041 RGB fans (non-RGB) but they don’t spin and aren’t detected in BIOS when connected via the chassis fan plugin on the motherboard. However, once I connect them through a fan splitter and power it from the PSU, all three fans operate at full speed. Someone might know why this happens?

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KateKitKat
Member
138
03-18-2022, 03:34 PM
#2
Some Corsair enthusiasts joke about PWM settings. Others back Zero RPM and might misinterpret a weak PWM output. The ARGB value should be 5V, not 12V, so avoid that error. It's usually easier to get the Commander TBH model. This update helps with a few common issues. Edited September 9, 2022 by An0maly_76 Updated with more details
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KateKitKat
03-18-2022, 03:34 PM #2

Some Corsair enthusiasts joke about PWM settings. Others back Zero RPM and might misinterpret a weak PWM output. The ARGB value should be 5V, not 12V, so avoid that error. It's usually easier to get the Commander TBH model. This update helps with a few common issues. Edited September 9, 2022 by An0maly_76 Updated with more details

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Sophcutegirl
Junior Member
49
03-19-2022, 01:16 AM
#3
You'll likely need to adjust the bios settings, changing the header to PWM instead of DC.
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Sophcutegirl
03-19-2022, 01:16 AM #3

You'll likely need to adjust the bios settings, changing the header to PWM instead of DC.

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pantoufle06
Member
165
03-19-2022, 01:57 AM
#4
Reviewed the BIOS settings—header was already configured for PWM. Disabling PWM causes the fan to run at full speed, yet when PWM remains active, the fan still doesn’t turn on. Could indicate an issue with the MOBO.
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pantoufle06
03-19-2022, 01:57 AM #4

Reviewed the BIOS settings—header was already configured for PWM. Disabling PWM causes the fan to run at full speed, yet when PWM remains active, the fan still doesn’t turn on. Could indicate an issue with the MOBO.