slvr_phoenix
Splendid
Okay, honestly, this is really becoming a struggle here. Are you really this clueless? Or am I missing sight of the Candid Camera crew somehow? I mean it's fair to ask these kinds of questions if you don't know, but I've got to say that I'm starting to worry about you doing this work yourself. Maybe you should just take it to a shop and have them clean it...So a can can damage my computer because of cold? WTF?
As for the explanation: If you apply freezing darn cold to anything that's really darn hot, rapid thermal expanding and contracting equals breaking. That's really basic physics and applies to pretty much everything (especially small engines), not just computers.
So once the compressed air becomes so cold that liquid starts spraying ... time to take a break and let it warm up again.
Plus I'm not entirely certain of the conductive capabilities of said liquid. I'd hope that it's not conductive, and it should evaporate quickly, but for that brief moment? I honestly don't know. So again, no liquid squirting out with the compressed air, no problems. When you see drops start to squirt out, stop.
Normally you wouldn't have so much dust to blow out and so there really isn't even remotely enough time for this to become a problem. But looking at that picture? Damn dude. Just damn. You're gonna need some time to be thorough.