Just checked this hidden device thing out.
As default Windows 8 and 10 should show hidden devices even if not present. As said, they show here, no problem.
In Windows 7 and earlier one has to set devmgr_show_nonpresent_devices=1 to enable as you have done.
OP states they are a Win 10 Pro user.
EDIT: I have now hunted down the Microsoft Support for it -
https://support.microsoft.com/en-nz/...-not-connected . Note also that in Win 7 and earlier it seems that the CMD is reset on closing.