SM-N910f always con recovery or restarting

Hi! this note 4 n910f is on recovery menu or restarting(samsung logo) al the time.

I´ve tried flashing diferent firmwares ( and the newest of course) but alway the same problem.:confused: I´ve tried un-tick diferent options in flashing mode but always the same problem.
What do you recomend me to do??
best regards!