Laptop doesn’t connect to Video Camera

[5STM5]

I have a number of mini DV tapes of my kids when they were young. I want to transfer these to a hard drive, so bought a Canon MV880x camera on ebay. All is good other than my computer doesn’t recognise the camera when it is in video mode, but sees it when in camera/image mode.
I have what I believe is the right software from Canon’s website, I am running Windows 8.1 and trying to connect via USB to USB.
Any suggestions what I can try?