Working with a laptop is very nice - it has internal batteries so you can work even if there's no electricity (at least for a while), you can easily take it with you, it takes up little space on the desk even when set up, and there's probably a dozen more reasons. However, laptops also have their little drawbacks - like, for example, that it is not always possible to do an upgrade, or repair something. And probably everybody who has been using a laptop for a while has stumbled across one or more laptop-related problems already.
So... I stumbled over this instruction on how to clean a laptop fan yesterday, and it made me laugh really hard - so I'm passing it on.