When you click the Bluetooth item in Control Panel on a computer that is running Windows Vista Service Pack 2 (SP2), the Bluetooth item does not work as expected. Therefore, you cannot set up a new Bluetooth device. Similarly, you cannot view or edit the settings for an existing Bluetooth device.
This issue occurs if you install third-party Bluetooth software on your computer and then you install Windows Vista SP2.
This article is based on a Microsoft KB 960531 or more information please visit the below given link