Computer restarting after putting in graphics card

[GusRemington]

So my computer recently had issues with starting up. When i go to turn it on, there was no video showing on my monitor. After trying and trying again i get the video on the screen, but whenever i try to put back in my graphics card, the computer randomely restarts before it gets to the Windows Login screen. I basically rebuilt this entire computer but it hasnt seen to help. My specs are:
Intel Core i5 6600k
Gigabyte GA-Z170X-UD3 Ultra ATX
MSI GeForce GTX 1070
16g DDR4-3000 Memory
525GB SSD
Corsair CSM 650W 80+ Gold Semi mudular
The thing is it was working the day before all of this happened. Can someone help me?

 

[Valkyrieneos]

Make sure you plug the hdmi into the gpu slot not the other slot

 

[GusRemington]

Make sure you plug the hdmi into the gpu slot not the other slot

Yeah that's what I was doing but it still turns off and restarts

 

[Valkyrieneos]

Make sure you plug the hdmi into the gpu slot not the other slot

Yeah that's what I was doing but it still turns off and restarts

Very strange not sure what to do