black screen after boot logo

I opened a new thread because i haven't found a solution
my problem:
- black screen after motorola boot animation
- not working if i restore firmare (5.0.2 or 4.4.4) o if i flash a custom recovery, seem that doesn't write because sometimes i get for 1 second "booting applications" popup with Lollipop theme (also if i flash kitkat), also recovery remains stock if i flash twrp.

bootloader is unlocked
thank you