Zenfone 2 screen replacement problems

I cracked the screen on my Zenfone 2, ordered Chinese replacement..didn't work (or so I thought) ordered another from a US supplier,hooked it in & still nothing..is there some kind of trick to installing or am I missing something? I see a faint light flicker, then nothing. When I removed the screen I didn't notice there was another seal screw next to the camera so unfortunately I kinda of pulled and yanked until I figured that's what was holding the cover onto the frame.:confused: it's not mentioned anywhere, but I removed the screw & the cover. . So do you think this phone is salvageable? Did I fudge something up by yanking? Just need someone who is familiar with the process to help me out