My keyboard is messed up as well, I spilled something in it. It got down into the motherboard as well (no, it won't work without the motherboard).

Here is something you can try. Unplug it and remove the battery. Hold the power button down for about 15 seconds. Openit up and stand it on it's side and let it sit that way for a day or two. You want to drain any moisture out.

I got back almost full functionality after doing this. The Z, X, and spacebar are still a bit persnickety.

I'll probably have to replace the keyboard. After 17 years as a computer/IT guy, I hate working on laptops. My eyes are getting so bad those tiny screws can be hard to see.