Chosen Solution

Nexus 5 Screen http://imgur.com/a/ZkLdf After moving all the parts over to the new screen, the screen does not turn on. There is light coming from the back of the phone as seen in the imgur link but the front is always black. The screen still works on the cracked screen. It seems like there is a problem with the digitzer. How would I fix this?

Its very posible that while changing the screen, you forgot to attack one of the wires that operates the display. Best bet, open your Nexus up again and check to make sure all the cables are connected by following the guide you used the first time!! Good luck! -J