How to Create an Admin User Account Using CMD Prompt (Windows)

Step 1 Open CMD Prompt...
On Windows XP, click the Start button, then open up Run..., and type in "cmd" and click OK.

On Windows Vista or Windows 7, click Start, search for "cmd" and press Enter.

Step 2 Add username and password
Now, in the command prompt window, type:

net user /add [username] [password]

Step 3 Add as admin
Now type:

new localgroup administrators [username] /add

Done!
You should now have a new Admin Account on your PC!