AI Overview –
It doesn't make sense. The fans are plugged into the PSU, not the motherboard.
Dynamically controlled PC case fans may not work due to incorrect power or fan header connections, faulty motherboard settings, issues with the fan controller or its software, or a lack of sufficient voltage to start the fans. To fix this, check all connections, verify motherboard settings in the BIOS, update or reinstall controller software, and ensure fans have enough power to spin by adjusting settings or plugging directly into the motherboard.
Troubleshooting steps
1. Check physical connections
- Inspect all cables: Ensure the fan's power cables are securely connected to the correct headers on your motherboard or a dedicated fan controller.
- Verify controller connections: If using a separate fan controller, check that it is properly connected to both the motherboard (for data) and the power supply (for power, often via SATA).
- Check for bent pins: Look for bent pins in the fan connectors and fan headers, as this can prevent a proper connection.
- Try a different port: If the fan is plugged into a motherboard header, try a different one to rule out a faulty header.
This video explains why your PC may not recognize the fans:
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00:57
View attachment 104632
violett_shadow
Reddit • Oct 24, 2023
2. Adjust motherboard and BIOS settings
- Change fan control mode: In your BIOS, set the fan control mode to a less restrictive setting like "Manual" or "Software Controlled" instead of "Auto".
- Set a minimum speed: Set a minimum fan speed or a fan curve that ensures the fans have enough voltage to start spinning, especially when idle.
- Disable conflicting options: Ensure any aggressive power-saving options or other conflicting fan control settings are disabled in the BIOS.
3. Address software and controller issues
- Update software: If you are using specific software for your fans (e.g., iCUE, L-Connect, or a motherboard utility), update it to the latest version.
- Reinstall software: Uninstall and then reinstall the fan control software. You may also need to uninstall the companion SDK if present.
- Update firmware: Some fan controllers require a separate utility to update their firmware. Check the manufacturer's website for a dedicated firmware update tool.
- Disable other RGB software: If multiple RGB/fan control programs are running, one might be conflicting with another. Try uninstalling all but one.
4. Connect directly to the motherboard
- If the fans are connected to a proprietary controller that isn't working, unplug them from the controller and connect them directly to the motherboard's fan headers. This can help you determine if the controller is the source of the problem.
5. Consider a faulty component
- If a single fan is not working while others are, the fan itself may be faulty.
- If multiple fans stop working suddenly, it could be a problem with the fan controller hub or a power management issue on the motherboard.
(here is the best comment)
The system is not recognizing the fans, because absent of the fan control wire being plugged in, the fans are essentially not plugged in. If you only have the JST port on the controller, you should have a JST to PWM converter cable. If not, they are available for purchase online...
support.microsoft.com
