See What should I do if I cannot find the BLUETOOTH(R) device I want to communicate with?.

Make sure that the authentication (pairing) between the device and your VAIO computer has been properly performed.

Some BLUETOOTH devices require authentication (pairing) before establishing connection with another device. Perform the authentication process before connecting to such devices.

Make sure that your VAIO computer allows BLUETOOTH devices to find the computer.

Click(arrow) in the desktop notification area, right-click(the BLUETOOTH icon), and click Open Settings to open the settings window.

Click the Options tab and make sure that the Allow Bluetooth devices to find this computer check box is selected.