How to Get MAC address of network adapter in Windows for registration in network

1. Try to connect your PC with network cable into network.
2. Run Command Prompt in Windows. In Windows XP/7/8/10: Press keys Win+R (Win key is near Ctrl and Alt on most keyboards). Into dialog type cmd and press Enter. Command Prompt window appears.
3. In Command Prompt type this command: getmac /V /FO LIST and hit Enter.
4. Use output of command for your registration - copy content of window into Clipboard 
    - first possibility: click on the left upper icon, choose Edit and Select all and hit Enter
    - second possibility: right click in window, choose Select All in Content menu and hit Enter
   After this use content of your Clipboard for registration.