Hello,
Right

still I will tell you the exact procedure.
Quote:
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Start >> Right Click to My Computer >> Click on Manage >> Local users and Groups >> Users >> Right Click On Administrator User >> and just disable it.
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Then, using same path create a new user with
Administrators privileges.
Note : Do this on your own risk, because if you will forget the password of the main user (new user) then we will not be able to reset it. Or we will not be able to enable Administrator user from the hardware node.
Let us know if you need any further assistance, we would be glad to assist you.