Macbook won't start up

My macbook was working fine until I left town a couple of weeks ago. I shut it down (which I rarely do) and unplugged it from the power source. When I pushed the power button today, no start up chime, blank screen, but I could hear the hard drive spin for a minute or so and then spin down and I still hear what sounds like the fan. I tried all the fixes suggested in Article: TS1365 to no avail. I stuck my diskwarrier CD into the drive, but although it spun for a while, nothing happened when holding down the "C" key (actually when I tried to do routine maintenance a few months ago, I couldn't boot up from that or the original Mac install discs either, but then forgot about it.) and pushing the eject button does nothing. Any ideas?