The problem with these types of threads is that there isn't enough information to even make an educated guess at the problem, let alone deduce which one of many possibilities actually ails your Mac.
Why does it matter that your Mac is out of warranty? Apple geniuses will usually take a look and run tests for free, and sometimes will even take it in for a tech to work on free of charge. Certainly, if it does cost money to fix (ie fried logic board), you can always decline and find someone else to do it. There's no reason not to take it to Apple to ask them to check it out. It's certainly better than asking us -- without access to the computer and the vaguest of symptoms (no boot), it's impossible for us to tell you what's wrong.
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Also dude, really? Two threads? You admitted to spilling a friggin drink on it in the other one. What exactly are you expecting us to conjure up to fix failure due to very real screw ups?
Wait, so the OP damaged it? @OP, see, here's the other problem with threads like this. Did it develop symptoms/other problems earlier, or did it actually just die as described? We definitely can't help you if the actual issues aren't even as described.
If there is a liquid spill and the DC-in/battery is working normally, then it could just be the keyboard itself, as it wouldn't be able to recognize the power button or any key combination to reset PRAM, etc. This is a perfect example of what I described in the above post -- being holistic, accurate, and honest is the most useful thing when you need help. If I didn't know about the liquid spill, I'd say 100% chance you needed a logic board replacement.
EDIT: I didn't realize this was your other thread --
https://forums.macrumors.com/threads/1529101/... so the intrigue continues, as do the inconsistencies. Does the charger turn green or not? Is your battery working? Are you just trolling us?