PC turns on then off. Continuous cycle

So I just rebuilt a PC. It was my brothers. I can't get the PC to turn on for more than 2 seconds before it restarts. Now it's in this neverending circle of trying to start up. Any help?

i7-4790k, Z97 extreme6 Mobo. I feel like I'm missing something simple but idk. 8 pin power is commented. The 24 pin as well. Drives are commented and I followed abyoutune video for the front panel commectors.

Any idea what I can do here?

Edit: Not getting far enough to hear POST beeps

Turning on from the mobo instead of front panel button does the same thing.

Submitted November 29, 2017 at 08:24PM by 1SingularFlameEmoji http://ift.tt/2zPglCC