Big wind storm so turned off computer. Hours later on restart Win 10 opens up as a new install with no wall paper, no programs, no data, nothing. Try to figure it out and see Solitaire is there now but was not for last 2 weeks. Do not know where it went. Try to open and it says can not run in "Built In Administrator Account" . I do not use an account or a password so usually it just boots up and runs. I tried to switch accounts and there is one in my name but it has no data or Office 2010 or favorite pages and default programs are not set. How do I get out of this mode and back to normal.