sounds like win 8/10 go to setting my account and press the manage my Microsoft account you will be taken to a web page. if that do not work you can try and switch to normal account its easy to set it as admin afterwards if isn't (choose account type) maybe after try switch back to ms login?
if all is lost and you can not login win8/10 has an option to "factory reset" f5 or f8 at boot i think it differs a bit, you need that blue gfx bootloader screen with big icons, choose advanced->reset system. you will loose data.
i have only used win10.. i reset a friends win8 though.
btw. before you do anything drastic; what does it say you need admin rights to do?