Got all the parts on my new PC earlier this week and spent the evening on Monday building.
Got everything in there, turned it on, and the motherboard LED displayed an error for "PCH Initialization." Noticed the front case fan wasn't working (though it was plugged in), so I moved the connector to a different plug on the motherboard and started up again... "No Memory!"
I had followed the recommended motherboard guidelines for placing 2 sticks of RAM (one slot A2 and then one in slot B2). I decided to unseat and put both sticks in A1 and A2. Booted again and all was well.
No monitor yet, so I was using a 32" LCD TV to do everything after the initial boot (install Windows 7, install drivers, etc). I've gotta' say though that Bioshock Infinite and Metro 2033 looked great with everything maxed out, running smooth as butter.
I'll try to post some pics later, as I'm curious to see if anyone might have recommendations for better cable management. I think I did okay, but I'm sure I could have done better.