Question No display at all when GPU plugged in.

Jul 19, 2019
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I've just finished upgrading my PC, I added an ssd and a new cpu. Ive alo reinstalled windows 7 fresh and want to go go windows 10 once everything is ready.
I first used the motherboard integrated graphics to download some motherboard drivers, once that was done I turned my PC off to add the gpu, a gtx 1060.
When I put it in and turn on my PC theres no display. I've tried plugging my HDMI cable into the motherboard and into the gpu, but nothing shows up. Also, if it's worth mentioning, the gpu fans on spin shortly before turning off when in the case.
Thanks for any help.