Hello,
On September 6, 2006 Microsoft has released a new feature in windows Vista called Software Protection Platform (SPP)
Software Protection Platform (SPP), is a new built-in feature in windows vista that detects if your windows copy is genuine or non-genuine. if your copy is non-genuine SPP will going to reduce your windows functionality and disable all windows features.
in reduced functionality mode you will only able to run Internet Explorer
the picture is a screenshot for a non-genuine windows copy after reduced funcationality by SPP