Water spill on laptop

Hi Guys! Thanks in advance for your time
So yesterday I accidentally spilled half a cup of water into my lapbooks keyboard. I immediately disconnected every thing and dried up the keyboard and the screen (a few splashes there).
I then looked up what to do while still being my display and my working touchpad and keyboard.
I the flipped my laptop over to let it dry out and moped up the spillage that came from the keyboard.
I turned my PC off too.
I detached a key to see if I could access the key board insides from there knowing that this was a non detachable one.
Nothing could be done from there.
I then let it sit there for about an hour before turning it back on only to see that the keyboard wasn't working anymore apart from the power key (has to be separated from the offer keys.).
I turned it back oof and on while pressing shift to go into bios mode.
That seems to have been mistake because I'm now blocked at a black screen with a none moving cursor and not one key action working apart from the caps lock.
Seeing no other solution I decided to open up my laptop with the adequate tools and to see if I could dry it alittle more or clean the eventual moisture.
I came as far as the mother board only to see that the keyboard grid is sealed within the case of the laptop using a heat gun, and that it could only be removed with it.
I also noticed that I had to dry some water on the backside of the battery , the one facing towards the keyboard. I don't if I put it back there afterwards or if it slipped through.
So I really don't know what to do, even more because when the battery is removed and I plug it in the laptop is doing a strange noise, not very loud but reassuring though.