So windows 10 (recent 1809 version.) . .. go to restart and when windows is shutting down, with no programs open the PC will just before the bios start screen will and stall .. escape / alt control/delete etc .. will not rescue the start up .. have to manually shut down PC with power button pressed to off for a few seconds to restart ,.,.

Have gone into safe mode/ task manager and have now shut or closed down the four programs on start up but it is shut down / restart I need to focus attention on..

Ideas?

Have already run a register checker and malware checker.