To remove dust from your laptop’s ventilation system, follow these steps:

1. Disconnect the laptop from power and any external devices.
2. Flip the laptop over and remove the battery.
3. Look for the vents and use a can of compressed air to blow into them.
4. While holding the can upright, spray it at the vents to blow out the dust.
5. When complete, replace the battery and re-connect power and external devices.