How do I find out which Active Directory group policy objects are applied to a specific user or computer?

To determine the Active Directory group policy objects that are applied to a specific user or computer, follow these steps:

Open the Group Policy Management Console (GPMC) from the Administrative Tools menu.
Right-click on the domain or Organizational Unit (OU) where the object you want to check resides.
Choose Link an existing GPO… in the Group Policy Objects folder.
Select the Group Policy Object you want to check.
Right-click on the Group Policy Object and select Properties.
Click the User Settings tab, then the Filtering button.
Select either the By User or the By Computer option.
Select the user or computer you wish to check.
Select the Apply button to display the Group Policy settings.