Oooh dusty laptops, my favourite gripe

Its like the manufacturers make access to the worst clogged places particularly awkward to get to so your machine burns out and then you go buy another ... Cynical me, but not too far wrong I dont think.
You can use those compressed air cans to blow out the cooling vents from both sides (depends on make and design), but if you are beyond the warranty its an easy job if the can is not clearing everything.
Please only do this if you feel confident taking your machine to bits ... very, very carefully.
Wear an earthing strap.
Remove power cord.
Remove battery.
Watchmakers screwdrivers, map on a piece of a4 where all the screws came from to open up the bottom panels (map them because occasionally they are different sizes and can cause problems if put back in the wrong holes afterwards .. You dont want to use a bigger screw and poke a hole through layers of the boards inside destroying connections or just making short circuits - Bad juju)
You just want to gain enough access to be able to remove the fan (sometimes you will find bits of sticky tape covering the screws to loosen the fan in its custom shaped housing).
Gently get the fan out of its housing (hopefully there will be enough connecting power supply wire for the fan to just ease it out of the way).
Inside the housing of the fan, have a look where the air gets channeled out of the machine - More than likely that will be your biggest problem, and you will have a carpet blocking the vent grills on the inside.
Clear it gently with some small tools like an artist stiff paint brush, plus a compressed air can to get rid of any remainder (Dont use a hoover - Static build up from using a hoover can damage your machine)
Re-assemble carefully.
I do this on my laptop once every six months. And it usually needs it.
I take no responsibility for any damage you may do to your machine though
