HELP!!!

This is easily the dumbest thing ive ever done.
I sprayed compressed air in my pc, the gpu, mobo, psu everything, i just took off the side panel and sprayed like a maniac. then, i put the pc back together and turned it on, everything running better than ever, then it suddenly turned off when i was in the middle of playing a game.

i pressed the power button to turn it back on, and none of the fans would run.
then i turned it off and back on and the fans work, and everything sounds fine in it, but the monitor wont show anything, just a black screen, like its recieving no signal from the gpu.

whats wrong? did the spray fry my pc or what? if it did, why did it run fine then just turn off midgame???

ps: the power button doesnt work either when i try to turn it off, so i have to use the switch at the bach of the case

i got it working again last knight, thanks for the reply, what a relief that was!