I am using an HP Omen, windows 10. I just updated the pc and now every time it launches it takes forever to start up. When started and clicking on a profile the screen goes grey, and after signing in personal settings shows up with a black screen, and task manager stops responding. There is no way to get task manager to open, and it happens every time I restart the pc. I cant go back to the old version since I cant access task manager. How do I get this computer to work again? Any help would be greatly appreciated.