Control Panel > Bluetooth Configuration > check all appropriate boxes, and check green/yellow LED on front center of device(should be illuminated)

Do the same thing with Control Panel > Bluetooth Devices> discovery on, etc.

If you don't see them, look in Device Manager, change view to 'Device by Connection' - do you see the Bluetooth Bus Enumerator? If you don't, it should be in the list as 'unknown device'. Visit the Lenovo site and get the driver for it.