Running Win8.1 & don't have Password Reset Stick. Signed in with a Microsoft account which is powerless and useless. All the the stuff you can type into the "RUN" box result in a popup asking for a (missing) password!
How do I restore my full admin privileges???
The first account created on a Windows computer should be a local admin by design. I can't confirm that with using a Microsoft Account as I never setup computers that way. You should be able to use a tool like lazesoft offline password tool which is part of Hiren's Boot Disc now to enable and blank out the built-in Administrator account if you need to do any admin work and don't have access to another administrative user account.