The problem is with the PC. If one good CC3D doesn't work, then very probably none will till you fix the PC. Buying a new CC3D doesn't help.
I don't do Windows any more, but this sounds like the sort of thing where going into Device Manager and Uninstalling all the related USB devices (especially ones that are marked with ! or some error) might help. Uninstall sounds bad, but it really just unconfigures the loading of that device. The next time you plug the device it, it will be automatically installed.
The worst thing that you can do in regard to this kind of problem is to plug the device in and click OK on the device wizard before loading the driver (from CD, internet, etc.). The uninstall thing resets it so that it can start from the beginning again and install the driver instead of ignoring the issue which is what happens when you plug in the device before you run the driver installation program.