The fans on my Razer Hanbo are not spinning or stops intermittently

Updated: 29-Apr-2025 | Answer ID: 5782
This article is a step-by-step process on how to fix fans that are not spinning or stops intermittently on the Razer Hanbo All-In-One Liquid cooler.

 

  • Get rid of any dust and grime that has accumulated on the fans and the radiator.
  • Ensure the connections between the Razer Hanbo and the motherboard are snug and secure.
  • Ensure you have installed it with the Razer PWM PC Fan Controller and that it is connected to the correct header on your motherboard.
  • Configure the Razer Hanbo’s fan settings by going to Razer Synapse > Accessories > AIO.
  • Verify your fan speed settings relative to the temperature in Razer Synapse.

    Customization page of Razer Hanbo in Razer Synapse 3

  • Replace malfunctioning fans if applicable.

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