Price breakdown by merchant:
 
CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor ($233.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($24.89 @ OutletPC)
Motherboard: Gigabyte GA-Z170M-D3H Micro ATX LGA1151 Motherboard ($92.98 @ Newegg)
Memory: Kingston HyperX Fury Black 16GB (2 x 8GB) DDR4-2133 Memory ($59.99 @ SuperBiiz)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($89.22 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($47.49 @ OutletPC)
Video Card: EVGA GeForce GTX 970 4GB FTW ACX 2.0 Video Card ($313.98 @ Newegg)
Case: Corsair 200R ATX Mid Tower Case ($44.99 @ Newegg)
Power Supply: EVGA 500W 80+ Bronze Certified ATX Power Supply ($38.98 @ Newegg)
Operating System: Microsoft Windows 10 Home OEM 64-bit ($83.89 @ OutletPC)
Total: $1030.40




 
 
HELP!
I just built this new system. Everything powers on, windows installed. Fine. problem is:
When the GPU (EVGA GTX 970) when connected to the PSUs 8pin+4pin my computer wont turn on.
I have the HDMI connected to the motherboard and everything works ok when the GPU is NOT connected to the PSU.
When the PSU is connected to the GPU, the entire PC will flash, but not power on.
Also, when the GPU is not connected to the CPU, the GPUs fan will turn on/off which means its getting power from the PCI slot (which should eliminate the possibility of the Mobo)?
What am I missing? Is this a dud GPU? Or is the power source not powerful enough? They are both from EVGA and 500w power is the minimum requirement so it should work?

Mauro33
Are you correcting the hdmi to the graphics card when connecting the gpu? The motherboards video out gets disabled when you connect a gpu.

 
No. The HDMI is plugged into the Mobo. The system will not power on AT ALL if the GPU is connected to the PSU.
 
I have tried the HDMI plugged into the GPU, The Mobo, and not connected at all. 

slayer_27
Try using the supplied molex to pcie adapters from the card.

 
Tried that too. Same issue. 
 
I also spoke to EVGA tech support and they deduced along with me that it is in-fact a faulty card. I also called Gigabyte (for my Mobo) and they blamed the power supply.
 
I really don't understand why the entire system wont power on if its just the card that faulty. If anyone else has any advice for me before I go ahead and have them progess a replacement on the card....

ty_ger07
Which power cables are you plugging into the graphics card?  Can you take a picture?
 
Your description is very confusing:

When the GPU (EVGA GTX 970) when connected to the PSUs 8pin+4pin my computer wont turn on.

 
8pin+4pin?  What!?!  Your video card has a 6-pin + 6-pin connector.  Not 8-pin nor 4-pin.
 
Your power supply has "2x 8-Pin (6+2) PCIE".  You need to plug one of each into your video card.  You plug 6 in from one plug and 6 in from the other plug.  The +2 on each hang out and connect to nothing.  DO NOT plug 6 into one plug, +2 into the next plug, and +4 from your CPU EPS power into that next plug.
 
It sounds like you are splitting the connectors up incorrectly.
 
It should look like this:

 
Sorry I meant to say that they were both 6+2 Pin connectors on one "arm" of the power source. I have them connected like this for both the 8 pin (6+2) and the 6 pin (6) connected. Your image looks like a 6 + 6 pin. Mine is 8 + 6 pin (below)
 
I also tried rigging the molex connector with a pcie 6 pin. And that proved the same results. 
 
See images of various attempts at troubleshooting to clarify: