yesterday I took delivery of a shiny new 17-inch Powerbook. after marvelling through the packaging, and drooling over the system itself, I plugged it in to fire it up. Nothing happened. I tried resetting the PMU and pram, various battery tests, checked the RAM, almost everything I could do. I have never even heard the startup chime. can somebody with experience on powerbooks (this is my first one) maybe tell me somethingI should try before I go back to the retailer for a replacement. anything and everything you tell me will help, so post them all. thanks everyone! p.s. the sooner the better!