Windows Server NIC address error

We virtualized one of our servers with VMM2012 P2V. Conversion went like a charm, but there was some IP problems.
So, the VMM2012 converted NIC adapters, but he transferred addresses to Hyper-V Virtual Network adapter, because his physical adapters are no longer present.
The server was up and running in virtual environment, but I hade to make some modifications to NIC.
then I received an error:

“The IP address X.X.X.X you have entered for this network adapter is already assigned to another adapter……”

So that means that no longer present adapter has the same address as the new virtual one.
Now, first of all we must go to device manager, but we must be able to see also nonpresnet adapters.
Open CMD as admin on that machine:
set devmgr_show_nonpresnet_devices=1
start devmgmt.msc

On View menu select Show hidden devices.

Expand Network adapters, and uninstall old/no presented adapters.

I suggest restart the machine

Good Luck

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