new rig doesn't boot with GTX 780 plugged in

addison1024

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Mar 8, 2014
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Several months ago I built my first custom PC. I was happily gaming away until a few weeks ago when it suddenly all went black.
When I tried to power on my rig as usual, my monitor displayed its start-up screen, but then went black and said, "no HDMI input". Also of note, when I powered on, the fans on my NVIDIA GTX780 immediately spun to high RPM and remained at high speed until I powered off. Neither BIOS, nor Windows could boot.
Now that I have removed the graphics card from my system, Windows boots and the system operates without issue.
So far I have checked all plugs/cables and replaced my power supply to no avail.
 
Could be a number of things, but since the computer fires up without the GPU in, the first suspect is your PSU.

When you say you 'replaced it', you mean you bought a new one, and it also didn't make a difference? What make/model is it?

List complete system specs please.
 

John T

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Feb 21, 2012
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addison1024

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Mar 8, 2014
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Specs are as follows...
Power Supply: EVGA NEX750G
Motherboard: ASUS Z87 Sabertooth
RAM: Corsair Vengeance LP 8GB
HDD: Seagate 1TB
SSD: Corsair Neutron 120GB
Processor: Intel i7-4770K LGA1150

I replaced my power supply via RMA with EVGA. I installed the new unit and experienced the same problem as with the original unit.
 
That would be frustrating for sure. Especially after having swapped out the PSU.
I'm assuming you have your motherboard's latest bios, and tried reseating that GPU a few times to make sure it's in.

Questions:
Do you have another system to test that GPU on?

Stupid questions:
Do you have the power supply connectors plugged into your GPU?
Are you plugging the monitor into the GPU's video out (not the motherboard video out)

Assuming it's not human error (stupid questions), I guess I'd rma that gpu next, if that doesn't fix it then motherboard. Something isn't right.
 

addison1024

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Mar 8, 2014
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GPU seems to have power, LEDs are lit solid green and the PSU cables are firmly seated in their outlets. The HDMI cable is also firmly plugged into the monitor and the GPU HDMI outlet.
I'm very confident the problem is not a matter of human error. One day the system was running games like ESO and Hitman Absolution with the graphics set to ultra across the board, all without breaking a sweat. The next day it was a vegetable. I made no hardware or software changes between the two days mentioned.
Unfortunately, I have no alternate GPU to test against the original.
 
I suspect that it is your card, the LEDs on the card only state if the card has power and if the vrm is working as intended. You need to contact customer service and file for an RMA, if they agree ship the card off for them to test it and ship you a replacement if found to be defective. Considering that it crashed while gaming and only revs the fan to max suggest that the card fails internal post.