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How To Fix Your Laptop Fan Always On


Laptop fan is an important component of the laptop cooling system. When the temperature of the laptop rises, the fan will start to rotate. However, if the laptop does not run any software at all, and your laptop fan always on, that may be caused by the system set up. Here’s how to fix a laptop fan constantly running all the time.

Method 1: Change system settings

Below i take win10 as an example to set up a laptop power management plan to reduce cooling fan speed and noise.

    1. Windows 10 : Go to Start > Settings > System > Power & Sleep > Additional power settings.


    1. Click “Change plan settings” in the pop-up window.
    1. Click “Change advanced power settings” in the pop-up window.


    1. Click “processor power management”, and click “System cooling policy” in the drop- down menu, then click “Active”, change the “active” to “Passive”, Click OK.


The setup is complete now. Then the fan will run as needed instead of running all the time.

Method 2: Clean the laptop fan

If your system cooling policy has been changed to passive and you have not run large software and the laptop fan constantly running all the time, you may need to clean the laptop fan because the fan and heat sink are dusty and its heat dissipation performance is reduced.

At this point, you will need to remove the bottom cover of the laptop, remove the laptop fan and heat sink, use a brush to clean the dust on the fan and heatsink fins. You need to remove the old thermal grease from CPU, GPU and heatsink, then apply the new thermal grease to the CPU and GPU to improve thermal conductivity.

David is the editor @ MyFixGuide. He loves technology, especially good at laptops and mobile phones. In his free time, he loves to take apart the latest mobile phones and laptops.

David Tian Editor @ MyFixGuide.

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