Black screen at boot

Hey, today i built my first computer..
I have plugged everything correctly (I think :-o)
Whenever i boot up the computer, the screen stays black.. I've tried 2 different screens
Oh.. And the computer restarts once right after boot.. Only once

Specs:
ASUS Maximus IV Extreme-Z, Socket-1155

Corsair HX 1050W PSU

Seagate Barracuda® 7200.12 1TB

Corsair Vengeance DDR3 1600MHz 16GB CL9

Intel® Core i5-2500K Processor

ASUS GeForce GTX 570 1280MB PhysX CUDA


Not sure what info you guys need.. so just post if you need more info

Thanks in advance
/Blaze

 

Try attaching everything on the motherboard one by one. Until you hit a roadblock. It could be that your video card is kaput! It could also be something is loose. Make sure all connections are clean, if need be use an eraser to rub dirty connections. & than use the highest precentage of isopropyl alcohol to wipe the connections off. Allow it to dry for 10 minutes first of course. I hope your not just using the onboard video. Because it sounds like it's a video card problem. I would also go into the bios and make sure that the added video card is set to "enabled." While the onboard video card should be set to disabled.

Hope this helps, if I was of any help hit the thanks button!~

 

PCI-E power conector?