If you are signing into Windows 8.x with your Hotmail/Live ID, you will need to log into the machine with a different account (either local, domain, or Live ID).
Go to Control Panel.
Select Users and create a local administrator account.
Switch to Tile View.
Click your name in the upper right corner and click Log Out.
Log in with the other account.
Good luck!
Best wishes, Davin Mickelson