"Where I used to work the people blew out the computers with compressed air. I think 300 dollars would purchase a pretty good compressor and filter. Of course the only option with compressed air is that it's done outside.."
This is without doubt the most effective way of cleaning out a computer - it can clean out all the nooks & crannies - but you do need a small plastic stick or similar to prevent fans spinning as you are blowing on them. You also need to be not too concerned about getting yourself covered in dust. You do need a proper air line though - canned "compressed air" won't be adequate. In some factory settings you can even get away without taking the computer outside, although this would not be acceptable in an office or domestic environment - & certainly unacceptable anywhere in a healthcare company.
Edited by rqt, 31 January 2016 - 04:32 AM.