1. Click Control Panel in the Start menu.
2a. If you are using the Modern View click User Accounts and after that User Accounts again.
2b. If you are using the Classic View, doubleclick User Accounts.
3. Click the Turn User Account Control on or off option, uncheck the Use User Account Control (UAC) to help protect your computer checkbox, click OK and click Restart Now if asked if you want to restart your computer.