Keyboard not responding with correct keys

Hello!

I have an Asus s46c since 2013.

I accidentally spilled some water on my keyboard yesterday but I managed to dry it. However today, it's not working at all. For example, when I type "hello" it looks like this: h5
Letters llo doesn't show (I'm using onscreen keyboard now).
When I type the delete button, this shows instead: ]

So some keys type out the right letters, but most of the keys aren't working.

I've used a hairdryer to dry out my keyboard; I've tried shift+ctrl+alt+numlk but it doesn't work cuz the actual keys don't work and onscreen keyboard doesn't really command those functions lol. I've even reformatted my computer because I thought I had a virus. It's still the same and not working.

Is there a way to fix my keyboard? Or is the damage irreversible? I'm glad there's onscreen keyboard so I can use it in the meantime but it takes forever and hurts my hand and wrist.... :(

Please help, thank you!