Using an air compressor with that sort of pressure behind it is much too high to use on your PC. It's easy to damage components that way. If you are lucky, you may have just dislodged a connector somewhere. Have you checked all connections inside the PC (drives, motherboard, PS, etc)? Check the memory sticks as well to ensure they are securely fastened in their slots.
hey. I just blew the dust out of my computer with an air compressor. i blew everyting off, including the power supply. once i put it back into my room and hooked everything up, i hit the power switch on the back of the supply. however, nothing turned on. i hit the power button on my computer to see if it would turn on... however, that didn't work. i moved the computer to a different plug, and it still wouldn't work. i'm hoping i didn't blow something that i shouldn't have. Maybe the air gun was too high of a pressure (90 PSI). I don't know if this is necessary, but my computer is an older eMachines. it has XP home, a gig and a quarter of ram, and an athlon XP 2200+ processor. before i blew it out, it worked well. The power supply is an ultra X-series blue/titanium modular, rated at 500 watts. it worked flawlessly until today. it isn't the stock one that came with the computer, and i bought this one in december 2007. can anyone help me out?