| A technician who posted here said the two most common things that damage laptop components such that you need to replace major parts are dropping it, or spilling liquid on it then using the laptop after that without having made sure there is no liquid inside of it.|
The damage has probably already been done.
Whenever you spill liquid on a laptop, you are supposed to unplug the AC adapter to it and remove the main battery IMMEDIATELY, even if it's NOT running at the time !
Then you look on the web and find a maintenance manual for your model series (e.g. HP has them for HP and Compaq models) so that you can find out how to open it up without damaging it, and clean up all liquid found, and then dry it out completely. Sometimes you also need to remove the keyboard and rinse it then dry it completely - there are instructions for how to do that on the web..
Unplug the AC adapter and remove the main battery !
If you don't want to clean it up internally yourself, take it to a laptop repair place to have them do it - they do that frequently. In any case it would be a good idea to do that because they can probably tell you in a short time what needs to be replaced if something is already damaged .
The data on your hard drive is probably still okay.