Please try a different USB port. We recommend directly connecting USB cameras to a USB port on your computer, not through a USB hub.
If you are using HUE with its base, please make sure that the neck is firmly pushed into the base and making the connection.
As HUE cameras are plug and play, it's normal for nothing to pop up when you connect the camera to your computer. You may need to install some video chat software if you don't have any applications which work with a camera.