A few weeks ago, my computer stopped detecting any internet connection from my ethernet cable. I know for a fact both the cable and the ethernet port on my computer work because I have tried them in my brother's apartment and I have managed to get internet access. I have also tried to connect to the internet in my own apartment with my brother's computer and that too succeeded. I have called my wireless service and they said nothing is faulty or abnormal with my connection. I'm very confused please help.