By default on Microsoft Windows 8 the Administrator account is disabled and you only have the personal user account created during the initial setup procedure done the very first time you opened the computer (or eventual other account manually created after).
Generally the user account you use should have enough privileges to perform any common daily routine, but sometime it is not enough and indeed you need to have the conventional Administrator account.
Microsoft Windows
Generate SSH keys on Windows using PuTTY
If you ever need an SSH key on Windows you can generate it using the PuTTY SSH client.
Use Windows software on Linux
One of the biggest limitation that most user have when they would like to migrate from Microsoft Windows to Linux is that some application they are too familiar with (and maybe have spent some money on to get the license) is available only for Windows. Fortunately there is Wine (https://www.winehq.org/) an Open Source (and free) implementation of the Windows API on top of X, OpenGL, and Unix.