My boss has a laptop that he connects to our network. All of a sudden he cannot connect. It is a windows xp laptop, it has a built in Realtek Ethernet adapter and the drivers are now current ( i updated them thinking they may have been corrupt). The line is definately working as i tried other laptops. There is absolutely no response (tried pinging) and it is saying that the network cable is unplugged. I do not believe it is a network issue. i believe it may be a hardware issue. He has a wireless network connection as well but i have disabled that. (The lights on the ethernet connection are non-responsive when connected RG46) He says that he has done absolutely nothing. I need help.. Thanks