You should see some of the ones I get calls on; living out here in farm county. You will find computers out in the barnes, and in pump houses. The farmer calls and say his computer is over heating and that it shuts down, and he cannot figure out why. You open the box and tears come to your eyes you think what the he**. Then you get out the air blower and go to work. This is the number one problem I face doing side work on computers for the farming industry. The main contributors are feed lots. Cows can really kick up the dust.