Hey guys, my machine is really bugging the hell out of me. I can only turn on the machine by using my studio display's power button. It seems the Tower's power button doesn't work, the light doesn't turn on. Also the speaker above it doesn't work either. I've been given the suggestion to take it to the Apple Store, but does it cost money for them to just check it out? I've also checked the machine out to make sure nothing is loose. I can't get rid of my machine if it can't turn on without using the display!