First Home-Built PC: "No Signal" After Inserting GPU

[RaverJesus]

Hi folks, I know that "No Signal" is a fairly common problem, but most solutions I've seen involve getting rid of or updating old drivers, and my computer was literally born yesterday.

I'm using a GTX 1070 (by Zotac, if it matters) in a Gigabyte H170M-DH3, along with an i7-6700 (no K), and a fresh out of the box install of Windows 8.1

I had no trouble when I did my outside-the-case build. BIOS showed up and everything looked fine.

I left the GPU out when I performed the full build and installed Windows, and everything was still fine. Then I powered down, turned off the power supply, inserted the 1070, powered back on, saw all fans and lighting elements working properly...and got "No Signal."

I do get a signal from the mobo port, but only when the GPU is removed.

I haven't tried another PCI slot, but I'm looking for all other possible solutions ahead of time, just in case. 🙁 Thanks in advance!

 

[kansaw]

Had a new GTX970 with "no signal" on the display when I lost power on the 6 pin power connector on the GPU. A power supply issue.

If your GPU is getting power from PCIE and 6-pin then the GPU might be the problem (?).

 

[Powa1216]

in your BIO you might have to change ur primary display from on board to pci-e. Hopefully that's the problem.

 

[RaverJesus]

in your BIO you might have to change ur primary display from on board to pci-e. Hopefully that's the problem.

Unfortunately it's already set up for that. 🙁

 

[reedo_43]

Is you PSU up to the task?

 

[RaverJesus]

Is you PSU up to the task?

Yup, it's an 80+ Gold EVGA, and I've got 200 watts of headroom even with everything running full tilt.