Power cycles on and off non stop after digitizer replacement.

I replaced the digitizer on my LG Stylo 3 (LGMP450 Metro PCS) but when I put everything together, it cycles on, shows the LG Life's Good screen, then cycles off. This loops without end. I can't turn it off with the power button, I can get to the factory reset screen but haven't used that option yet. Hoping for another solution. Please help