Go through the steps outlined in the link in my sig.
SMC reset:
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Press and hold the power button for 5 seconds.
4. Release the power button.
5. Attach the computers power cable.
6. Press the power button to turn on the computer.
I recently had what seemed to be a hard drive failure on my 2006 Core Duo iMac. I took it to the local Apple Store, and in ten minutes they confirmed that the HD was dead but no other problems existed. With that info, I was willing to do the repair myself. No charge at all for the testing. Worth it.
By the way, are you sure the electrical outlet is live? Test it with a lamp?