Yesterday i turned off my computer normally and i didnt come back to it for a while. When i wanted to start it up again later that night, it wouldn't turn on. I found that by taking out the battery (which is fully charged) and the power cable and then putting them back in the computer, it makes the usual mechanical sounds as if it was turning on accept for the 'chime' sound that is usually present and nothing happens with the screen its just black. Anyone have any ideas?

you might have better luck in the Mac forum. to the best of my knowledge, all apple products must be serviced at the Mac Store. have fun.