Laptop fan brands include AVC, ADDA, AAVID, DELTA, SUNON, Panasonic, Toshiba, and other brands. Not all laptop fans have kept working. Some laptops use the intelligent temperature control board. These laptops fan work intermittently, which means the fans don't work until laptop reach a certain temperature.
The fan is a laptop's cooling device. If a heap of dust covers the fan, then it will influence the heat dissipation performance. When you plan to clean the fan, first you should use a clip or other tools to take out chunk dust, and then blow into the vent to clean the inner dust. You just need to repeat these operations several times, and then the fan will be clean. If you want to clean the cooling fan further, you can disassemble the fan, and then lubricate the fan's motor.
After the fan's dust gets moved, the vent will be clear, the heat dissipation will be faster, and the heat generated will be decreased. In this way, the fan's working frequency will be reduced, and it will create fewer noises. Users may not be accessible to the fans and cooling fins after disassembling some laptops. In this case, users should go to some repair shops to get the laptop's fan cleaned.