The Windows Customer Experience Improvement Program
helps Microsoft improve Windows. Without interrupting you, it collects information about your computer hardware and how you use Window. The program periodically downloads a file to collect information about problems you might have with Windows. The information collected is not used to identify or contact you. Windows 7 Privacy Statement - Microsoft Windows Windows 8.1 Preview and Windows Server 2012 R2 Preview privacy statement - Microsoft Windows
This will show you how to join or unjoin the Windows Customer Experience Improvement Program
(CEIP) in Windows 7
and Windows 8
You must be logged in as an administrator
to be able to do the steps in this tutorial.