NO VIDEO - fans on, seems to try to boot over and over again

[fs2o]

Hi guys,

Starting my 1s mackintosh project, a CustoMac Pro.
I plan to install Yosemite and I'm following a few threads here to guide me through the process:
https://www.tonymacx86.com/threads/...0-32gb-ram-yosemite-10-10-5-windows-7.171592/
https://www.tonymacx86.com/threads/...gt-i7-4790k-nvidia-geforce-gtx-970-sc.149666/


Running into the following problem:

I just put the machine together, trying to flash the motherboard to the latest BIOS, and I get nothing.
In more detail, I turn the Power Supply on, push the motherboard "on" button, the fans spin, motherboard LED lights up, the 2 digit LCDs on the motherboard read "15", then quickly cycles through: "C5", "C4", "C3", "C2" and stops at "C0" for a few seconds... then everything goes dark and the same thing repeats over and over again.

I get no video signal. I am only using the motherboard HDMI out (no PCIE video card yet).

Here are the components:

Corsair 300r computer case -
https://www.amazon.com/dp/B006I2H0YS/?tag=tonymacx86com-20

Gigabyte GA-z97x ud7 TH motherboard (rev 1.0) -
http://www.gigabyte.com/products/product-page.aspx?pid=4995#ov

Intel i7 4790K processor -
https://www.amazon.com/dp/B00KPRWAX8/?tag=tonymacx86com-20

Corsair Vengeance 32GB DDR3 2400MHz (4*8GB) -
https://www.amazon.com/dp/B00GM83C86/?tag=tonymacx86com-20

Corsair RM750x power supply -
https://www.amazon.com/gp/product/B015YEI9NQ/?tag=tonymacx86com-20

Corsair H60 Hydro Series -
https://www.amazon.com/dp/B00A0HZMGA/?tag=tonymacx86com-20

Samsung 850 EVO 1TB SSD -
https://www.amazon.com/gp/product/B00OBRFFAS/?tag=tonymacx86com-20

Geforce GTX 750ti Video Card -
https://www.amazon.com/gp/product/B00J0ISHMQ/?tag=tonymacx86com-20

Any advice would be much appreciated!

 

[Fl0r!an]

Hard to give you any advice beside "make sure everything is properly seated and all cables are plugged in". Additionally any component could be DOA or have been damaged when assembling your rig.

 

[fs2o]

Hard to give you any advice beside "make sure everything is properly seated and all cables are plugged in". Additionally any component could be DOA or have been damaged when assembling your rig.

Thanks for responding!
I can't quite figure it out, I dissasembled everything and inspected all the parts, visually everything looks fine, I tried booting it with only 1 stick of RAM, tried all 4 and nothing. I tried without the SSD and with it. I don't really know if I'm spacing out and forgetting a simple connection.
Wondering if one of the parts is indeed damaged, if it would likely be the CPU or the Motherboard.

Any insight on how to figure out what's going on is much appreciated!