Had a terrible power surge hit the house yesterday during a storm, and my iMac was on at the time. I tried powering it up and it sounded like it was running, however I could not get a display. Later in the day it wouldn't even power up anymore. Before I bring into an apple store I was wondering if anyone has had a similar experience or knows what the issue could be. I'm really hoping I won't have to shell out for a new one, but I'm guessing the damage is going to be severe... Any advice?