Automatically shut down once in the loading screen

So, there’s this day my laptop put inside a bag together with my water bottle and the bottle cap came off eventually flooded the whole bag. And unfortunately my laptop is inside and sinker I think 1/4 of the laptop from the fan edge there and touch bar. After I let it dried it went back to normal, but around 5 days onwards when I shut it down it start up slowly and once in the loading screen it shut down on itself. I can only start the screen when I pressed down for >3seconds, normally 1 quick press should start up the screen but now it doesn’t. Anyway is it the logic board problem? The screen is perfectly fine though. Hope to find help here!