macbook pro won't turn on

Mac won't turn on?

http://support.apple.com/kb/TS1365

Go step by step.

Note: Steps 5 and 6

Best.

Your mac is broken. More then likely the logic board has failed. The only people that can fix that is apple or a authorized apple repair center. But to replace the logic board is very expensive so you might be better off just buying a new computer.