I had a cup of ice water on my desk and I knocked it over and went directly in the top of the PC. Hopefully I pulled the plug quick enough, it was working when I pulled the plug. I am not going to try powering it up until tomorrow to see if I killed it
I would say 80-90% of just water doused PC's come back to life.
It all depends on how long it was plugged in, and where the water went.
Pull the doors off, pull cards out, lay it all on a anti static mat or bag, then add low heat for a while.
I like to set them in the sun from a window for a day while plenty of air is blown over it.
If it's really soaked, I use alcohol to clean anything up that's really dirty, and then dry it out.
I pulled out the GPU and power supply (it had water on top of it). The I fired up my air compressor and gave the PC a good blow job. I am going to let the fan run over night. I will try powering it back up after work tomorrow.
I would personally pull it apart and give everywhere where there are traces of water a good clean with IPA (99% alcohol not beer ) else you risk getting that typical green tarnishing as the remains of the water and electricity mix.
Wish me luck, it has been over 24 hours since my extreme water cooling mishap. I am going to put it back together and power it up and hope for the best.