PC fans turn on for half a second then switch off

[Bloodhound717]

I built a PC a couple of days ago and I made sure the installation of the parts was really smooth and without any hassle, I made sure everything is plugged in correctly and I saw the recently uploaded video by newegg on how to build a PC. So I turned on the PC and the processor, and graphics card fans spun for a half second then turned off but the connectors on the graphics card stayed green. So that means the PSU is fine since it shows that the parts are getting power. I don't have my monitor yet I'm getting it in a couple of days but the PC itsle fwont turn on right so I doubt the monitor is the problem. If anyone can help me this would be amazing. Here's the part list:
CPU: Intel Core i5-4690k
Motherboard: Gigabyte GA-Z97X-SLI
RAM: G.skill ripjaws x (2x4) GB sticks
GPU: Asus Poseidon GTX 780
HDD: WD 1TB blue
PSU: EVGA supernova nex 750w 80+ bronze
Case: NZXT Phantom 410

 

[grembandilla]

Have you verified all your power connections to the motherboard? like is your 20+4pin connector plugged all the way in. Are they any beeps upon startup? Is the CPU receiving power from the 4 or 6 pin connector on the motherboard there sometimes is a light that shows this. Get back to us =)

 

[Bloodhound717]

I'm sure everything is plugged in, I don't have a speaker to hear the beep and no light turns on at the processor