How does a laptop keyboard get damaged outside physical force? The most common cause is the old liquid spill and the culprate is usully coffee.
What is the most destructive liquid that can damage not just the keyboard but the whole laptop? The answer is Coke! It is one of the most destructive out of al the commong liquid spills, next is wine and beer.
Water suprisingly doesn't have to destroy the keyboard as long as you don't try to switch it back on while there is water still in the keyboard (or even inside the laptop).
If any liquid damage happens, you should switch off the laptop immediately, wipe off as much as you can and then put the laptop upside down so the liquid that penetrated the keyboard has a chance to get back out again.
It is never recommended to switch it back on, immediately take it to a laptop repair professional that knows exactly what to do to prevent any terminal damage to the laptop.
Keyboards in most cases only take no more than 20 minutes to be replaced. Sometime we can do the job while you wait. Ask us about this service.