Previous of the moment of the title the PC kept turning off at random moment and when turned on after the booting it could sometimes show a black screen with a white stripe on the middle top so I tried hard shutting it down twice for repair mode but when in diagnostic mode it turned off by itself and when turned on again started using it as if the diagnostic worked and the problem won't occur again but then the led stripe on front turned red and the PC suddenly turned off again but now won't turn off or show sign of life