How do you get coffee out of a desktop tower?

Well, my brother got mad at me for calling him stupid so he took my computers tower and tossed it down 3 story stair well at my apartment. But when i plugged it worked. The CD drive fell out and the cover completely fell off. Not to mention there was this like big green circuit board that was hanging out of the case and it was kind of bent out of shape. but then the other day i was using the computer and it caught on fire so i poured coffee on it. Now it has even more damage so how do you get coffee out of a computer? BTW its a $3000 computer i got it last month.