Hopefully, something is just shorting out some of the sense circuitry. Powering it back on after rinsing it and only blow drying it was a pretty bad idea. It may have shorted something out and fried it. Either way, you're pretty lucky it powers on at all. I agree with ZenZim. Take it apart, be very careful, clean it up with isopropyl alcohol (Not tequila. Save that for later.
![Stick Out Tongue :p :p](https://tpucdn.com/forums/data/assets/smilies/tongue-v1.gif)
), let everything dry for a very long time, carefully put it back together with fresh thermal paste, cross your fingers and boot it up.
If you're not comfortable with this, I'd either pay someone to repair it or sell it as-is. I'm sure you'd find a buyer, depending on the price.