How to clean air outlet dust of Power fan for HP notebook probook 4431s

HP notebook 4431s has been in use for two years, the fan sounds great, HP Support Assistant prompts "clear air outlet to reduce heat dissipation and fan noise"

View Official Website: Clear Air outlets to reduce heat dissipation and fan noise

Decide to clean the air outlet by yourself. The following are the steps for dismantling and cleaning.

1. Shut down the host, cut off the power supply, and remove the battery of the notebook.

2. Unscrew the screws on the back cover.

3. Use the method of removing the battery and push the switch with both hands to remove the rear cover of the notebook.

4. Unscrew the screw on the fan and remove the power cord interface.

5. Because there is no dedicated cleaning tool, I use a cotton swab to clear thick dust from the air outlet.

6. Install the fan again, connect to the interface, and screw it.

7. Push the back cover of the notebook from the back cover, push the power supply, and screw the back cover.