Goto Network Connections, open the properties for Local Area Connection, then in the little scroll box, remove all the ticks from the protocols except Internet Protocol (TCP/IP). If you want/need to share files or printers, also tick File and Printer Sharing and Client for Microsoft Networks.
You might want to also set the connection to connect at 100M full duplex, by clicking on configure in the General tab of properties for the connection, then going to advanced on the network card's driver window, and then selecting the Link Speed/Duplex property and setting it to 100 Full.