The methods and steps to clean the CPU fan are as follows:
1. When the host is powered off, gently remove the CPU cooling fan, be careful not to let the dust on it fall onto the motherboard and cause secondary pollution;
2. Confirm whether your cooling fan is a fully-sealed insulating case. If so, put it in clean water, rinse it off, and then dry it.
If not, avoid getting water and remove it from the main unit. Gently wipe off the dust that comes into contact with a dry cloth or paper towel, and then use your mouth or a blower to blow away the hidden dust inside;
3. If the CPU fan has not been cleaned for a long time, such as more than a year, it is recommended to remove the CPU radiator and clean it at the same time, and then replace it with new thermal grease, which will be more conducive to good heat dissipation
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