open the case and recheck all connections. sounds like something was blown loose. if you did not use can air but something else, there is always a chance the might have been water or oil in the lines that could damage things.
Hi. I was cleaning my PC with compressed gas duster this afternoon and as I turned my PC on , I came to the setup stage. As I was confused, I turned the PC off and put the Ram piece to the next racket, hoping it would work as a reset. By the next time , the screen don't respond. I can't turn off by pressing the button so I turned it off with the PSU .
What's happening and what should I do?
Tony

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic