Black view 5000 android 6.0 crushes and refuse to switch on

Black view 5000 android 6.0 crushes and refuse to switch on further than the starting logo! Before crushing showed on the screen a warning saying launcher error (MIND YOU IS THE LAUNCHER THAT THE PHONE WAS ORIGINALLY SOLD WITH) then the walpaper was turned back to the factory settings walpaper and then almost immidiately died on me. I have tried reviving it by pressing volume up and start button and then run a test control it said everything was ok ... deleted cali and then formatted the divice at the end of the menu was a choice of rebooting ... it goes to the starting logo and freezes! By pressing start button and volume down button I get a choice of recovery boot it does not go any further than the starting logo! the choices fast boot or boot normal the same .... CAN ANYONE HELP ??