Did you even install windows yet?
I know that feeling, had to reorder an Asus 670 GTX from newegg on thursday with 2day air and i'm not getting it til Tuesday.
No. Absolutely nothing pops up on the monitor. I hooked it up with HDMI and VGA and my monitor still said No Signal. I'm using the ASRock X79 Extreme6 with a Hyper 612 cooler, MSI GTX 670 gpu.
I tried using different power cables, too. I used the right ones, but I had multiple PCI-E cords that ended in a six pin as well as some that were PCI-E that were to be split with a molex cord. My PSU seems to be doing its job; all the LEDs and fans turn on. The reset button on my mobo works, and the clr CMOS button in the back panel, when pressed, powers down the pc and gives it a second til it starts up again.
I basically can't get to the BIOS, but I'm really scared that I did some damage to my motherboard because the heatsink wouldn't fit no matter what braces I used. I ended up screwing in two opposite corners (of the four) in to secure it evenly, but I tried and tried to get all four pins to line up. I could never get all four to actually penetrate the screwholes they're supposed to. They wouldn't go into the pin slots far enough to catch the threads. I'm afraid that I bent my motherboard trying to screw it in like that. It doesn't look bent or damaged but it's become clear I really lack the know-how to do this properly. I prepared my butt off and still fucked up.
I honestly don't know what to do. It's a really strange, sinking feeling when you realize you just bombed $1700 of hard work and savings.
I'm leaving it alone overnight, but won't the thermal paste harden so much that I won't be able to take off the heatsink without breaking the mobo or CPU underneath it?