It is sometimes helpful to find out which processes are running with elevated permissions. Follow these steps to determine the UAC Virtualization status:

 

Open the Task Manager (Ctrl+Shift+Esc).
Click on the Processes tab, and click on the 'Show processes from all users' button.
If prompted by UAC, click Yes.
Click View on the menu bar and click Select Columns.
Check the User Account Control (UAC) Virtualization box, and click OK to add that column to the Task Manager.
You can now look in the UAC Virtualization column to see if a process in the Image Name column is running elevated or not.
If the column entry shows Not Allowed, then the process is running as administrator (elevated).