right click on my computer
go to manage and click
click on local users and groups
click on users > go to action (up the top of the window)>click on new user
put a name in the box but not your own or your own with a 1 eg: peter1
put in password and confirm password > untick user must change password.
click create > then close> this should give you a new user.
Highlight the name and right click. go to propertities > member of click on ad
click on advanced > then find now this should give you a list including administrators click on administrator then click ok and ok again
you should now have a new user with admin rights.