Uninstall the Air2U Bluetooth device in the Device Manager and reinstall the utility.
Step 1 Right-Click on My Computer and click on Properties.
Step 2 Click on the Hardware tab.
Step 3 Click on the Device Manager
.
Step 4 Double-click on Bluetooth USB.
Step 5 Right-click on the Air2U Bluetooth device and click Uninstall.
Step 6 Reinstall the Bluetooth utility.