Many times you may have encountered the prompt for administrator privileges in Windows 7.
There is technique by which you can set the administrator privileges by default in Windows 7.
1. Go to Start Orb –> Computer and right click ,select Manage.
2. Double click Users and Groups,select Users, click Administrator and open its Properties by right click
3. In General tab,uncheck Account is disable,then click Apply and OK.
4. Delete other users in this group.
You are done! Good Luck
Now Windows 7 will not asking need administrator privileges.