Im, not sure exactly whats the case but you can try disconnecting the power source from your case and holding the power button down for about 15 seconds... its called a hard reset. See if that works, maybe try reseating your ram aswell (just take it out and put it back in)
other than that maybe check the wire connections with your power button and the board... thats all i can think of.
other than that maybe check the wire connections with your power button and the board... thats all i can think of.
