Hello everyone, My Mac from 2007 does not chime when I hit the power button, it just beats like a slow heartbeat as if it's on sleep mode. The monitor does not turn on. The fan inside starts and stops, continuously, matching the slow beating of the power button's light. Any ideas of what might be wrong? Luckily, all of my 4 hard drives have been backed up and I've been looking to buy the next version of the Mac Mini. I think this is a hardware issue, one that would probably not be worth replacing. Any thoughts?