Please mind, that on laptops it’s a common case that the network card is deactivated when you are running on the battery.
Please check, if you plug in your power supply and reboot the machine if there is an active network card.
You can check this by the following command:
Run “ipconfig /all” on a DOS-Shell
a.) Without power supply
b.) With power supply (and reboot)
You should find a section like “Ethernet adapter local area connection”.
If this is not the case please check if your network card is deactivated.