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Now click on Groups, and select a dministrator.Go to Run command and type lusrmgr.msc this will open user management console.before adding your user name the current user id must be added in admin group. If the system is connected to domain and you are logged in with user name and password then this method will help you to add any user name in admin group.
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WorkGroup Administrator-> Local system administrator.Domain Administrator-> Windows Domain Administrator Groups.But we use mostly these two type of account types. There are many Types of administrators are there. If you are not sure if the account that you have on the computer is an administrator account, you can check the account type after you have logged on. This article shows how to Add user to administrator Group using several methods.
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