Bluetooth is a wireless technology used primarily to replace serial cable connections by automatically connecting two associated devices when they are within close proximity of each other. The Microsoft Windows 7 operating system includes support for Bluetooth devices usually using drivers supplied by the Bluetooth device manufacturer. If a Bluetooth device that has been configured to associate with a Windows 7 computer fails to connect to the computer, restarting the Bluetooth stack can resolve the issue quickly in many cases.
Click the "Start" button and then click "Control Panel" and double-click "Administrative Tools."
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Double-click the "Services" item from the list displayed. The "Services" window will appear.
Click to highlight the "Bluetooth Support Service" and then click the "Restart" link located to the left of the services list.