If you can, consider removing the battery. This will also help your laptop cool down internally. Simply open the latch on the underside back edge of your laptop and slip the battery out (how you remove the battery may vary depending on the laptop’s make and model).
If you can see the fan blades through the vents, point the nozzle directly at them.
This should only be a last resource if you’re still having thermal interference after cleaning the vents. Only then you should try opening up the machine to clean it.
Keep all the screws in a safe place as you’ll need them to reattach the backing later. Some laptops have push tabs instead of screws, allowing you to remove the underside by pressing a switch(s). [6] X Research source Consider referencing a “teardown guide” for your laptop’s make and model. Sites like iFixit and YouTube offer advice on taking apart all types of laptops.
If you’re comfortable, consider removing the fan from the laptop with your screwdriver to wipe it down entirely. Compressed air can also be used at this stage if you have it on hand. Simply spray small bursts into the fan and its attaching parts. [8] X Research source
If there’s something’s gummed up on the blades, brushing is probably the only option to remove it. Blowing air usually doesn’t work in these cases.
