well, dust buildup in your computer can eventually produce a bad hard drive and dust buildup can also create an environment for static electricity.When you take a computer apart, one of the first things you do ist to de-statisize your self by touching a non grounded piece of metal, this will help prevent your shorting out your computer. Best thing to do is by a can of compressed air and use it to spray clean your computers, printers, etc.. . The Wolf