Is this a laptop or a regular keyboard?
If it's a laptop keyboard, you might be able to get a replacement online somewhere.
If it's a regular keyboard, replacements are cheap if it can't be fixed.
There are small circuits that are closed when when a key is pressed, completing the electrical circuit for that particular keystroke. When liquid gets inside the keyboard, it often touches more than one of these circuit paths, so when one path is pressed, it ends up completing several circuits and not just the key you pressed, resulting in either multiple characters popping up or the keyboard getting the wrong signal and therefore telling the computer the wrong keystroke (like
insert putting it to sleep).
In some cases, if you disassemble the keyboard, seperate and carefully wipe dry the circuit sheets inside, everything will be ok. Depending on the keyboard, this can be either fairly easy or really difficult. Some keyboards (for instance, my Zboard keyboard) are only composed of a few pieces: the base, the top and keys, a single rubber pad sheet, the circuit sheets and circuit board.
However, in some cases, it's not that simple. Some keyboards don't have all of the rubber pads in one big sheet, but instead have about about 100 individual little rubber pads... a severe pain to take apart and put back together by hand.
You might be better off spending $10-20 on a new keyboard... or beating $10-20 out of your brother
Disclaimer: I was joking about beating your brother. Don't hurt him too much.
