15" Unibody 2.66 GHz Mid 2009 won't turn on, any advice?

Hi,

Awhile back, I was working on my 2.66 GHz MBP that I bought in late June 2009 when suddenly it just shut off, now it won't turn on at all. The battery level indicator still lights up when you press the button on the side. The only thing I did was when I bought it, I upgraded the HD from 320GB to a 500GB one.

After it wouldn't turn on I reseated the fans but that did no good.

I took it to the genius bar at an apple store and he pushed the power button a few times and said "Oh, it's gotta be the logic board." He didn't open it or anything. I asked how I'd go about getting that replaced since my warranty isn't up until June 2010 but he noticed a small 'dent' (see pic below or larger version here)

He says it's pushing into the screen and damaging it so he said that that voids the warranty and would require they replace the logic board and the whole screen to the tune of $1,700 (I only paid $1,999 brand new).

I tried to tell him the 'dent' happened months earlier and that the screen works excellently. I told him I didn't understand what one had to do with the other and why they couldn't just replace the logic board since it's under warranty. He made some dumb car analogy that if you take your car in for one problem and they find another, they HAVE to fix both, which is certainly not true.

Any ideas on whether it could be anything else? Anyone have any related advice?

Thanks,

Matt