I have major dust collected on my cpu fan/heatsink, and as I look the same has happened to the mobo controller fan and my gf4 fan. what is the best way to clean all this up? I *know* it cant be good ...

The buildup of dust inside your computer can block air circulation and damage your PC's delicate components. Regular cleaning helps keep your computer running efficiently for longer periods of time.

Regularly cleaning your laptop can make a big difference in how it performs and how long it lasts. Here are some of the key benefits: When the fan and vents are free of dust, your laptop stays cooler.