My laptop can't connect to the net
My method of connecting to the internet is through an ethernet cable, it has always been this way and I have used this method plenty of times before. But as i tried last night, I put the ethernet cable to the ethernet port of my laptop and it couldn't connect to the internet. Nothing was wrong with the modem and if I put the ethernet cable to the ethernet port of my other computer (a desktop) it connects properly to the internet. So tried again putting the ethernet cable to my laptop but still no connection. I recently haven't done anything to my laptop and there waws just a slight modification on the modem but it still connects on the desktop.
Can anyone tell me what's wrong?