oxford373 :
your ethernet adapter cant detect internet or your PC cant recognize the ethernet adapter ,check device manager and see if your windows recognize the ethenet adapter .
sir the laptop cant recognize the ethernet adapter..
here's the device manager printscreen of my laptop with the ethernet adapter attached on my computer
http://postimage.org/image/z61jpryjp/
and here's the network and sharing center printscreen image with the ethernet adapter attached on my computer
http://postimage.org/image/75j2ocfhf/