My internal 320gb iMac HDD died, since the computer is a 2008 (late 2007) I decided to upgrade to a 1.5tb internal. So I bought a drive and took apart my iMac and popped in the drive and put it back together. (note: I'm very familiar with tough installs). I hit the power button and I get a half startup bong and then nothing, then it restarts and half-bongs again, restarts, so I turn it off. Start it again, a fraction of a bong and then nothing really. All the while the screen never made a flicker or anything, just straight black. I do hear the DVD spin up (my 10.6 disc is in there). So I took the iMac apart again and checked everything and all was fine. I really don't know what to do. I have done the SMC reset and went through the motions for zapping PRAM. Ideas please! Is the LCD fried? Thoughts on what might be dead?