Tried to reset computer to factory settings through settings on windows 10 using Packard Bell. Came up with a blue screen, delete all or save personal files. I clicked delete all. It got to about 50% and said there was a problem so it had to cancel and no changes were made. I clicked to go back to windows 10 and it keeps flashing black screen and then Packard Bell logo with small writing at bottom to press del or f12 to display boot menu. How do I get it back?