1. Start the Windows 'Computer Management' console by running 'compmgmt.msc'
   
   In Windows 10 type compmgmt.msc in the search box:
   
   
   In Windows 7 and Vista click 'Start' and type  compmgmt.msc:
   
   
2. Navigate to 'Local Users and Groups' > 'Groups', then right click on 'Administrators' and select 'Add to group'. 
   
    
3. If your user account isn't in the list then click the 'Add' button:
    
4. Enter your account name and click 'OK':
    

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