English is not my mother tongue, I may have expressed myself a little awkwardly. So from the beginning: Do not use compressed air from a can. Instead, use either an air compressor or a powerful blower. The latter is available quite cheaply from the big “A”. They are also suitable for cleaning other things. The underside of the notebook must be removed for cleaning. Direct the air jet at the fans and through the fins of the heat sinks. While you guide the air jet with one hand, you should hold the fan with the other. The fans must be held firmly so that they do not start to rotate due to the air pressure. That would not be good. I hope I have been able to help you.
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