Find Old Network Card not show under Device Manager

Symptoms: 

Popup error while setting IP

The IP address XXX.XXX.XXX.XXX you have entered for this network adapter is already assigned to another adapter Name of adapter. Name of adapter is hidden from the network and Dial-up Connections folder because it is not physically in the computer or is a legacy adapter that is not working. If the same address is assigned to both adapters and they become active, only one of them will use this address. This may result in incorrect system configuration. Do you want to enter a different IP address for this adapter in the list of IP addresses in the advanced dialog box?

But cannot find this old hidden device to remove even you already enabled show hidden device in Device Manager

Cause:

Show hidden devices option in the Device Manager (View > Show hidden devices) does not always show the old NIC (ghosted adapter) to which that IP Address is assigned.

Solution:

From cmd prompt:

    set devmgr_show_nonpresent_devices=1

After that make sure in Device Manager:

    View > Show Hidden Device        Checked

Should show dimmed network adapter under network manager group.

Note:

For Some old OS, you may doing by add System Variable:

- In the System variables section, click New.

- Set the Variable name to devmgr_show_nonpresent_devices and set the Variable value to 1 to enable the parameter