My sons emachine W6409 lost internet connectivity about a week ago. So far I have ran: Malwarebytes and vundofix. I've also tried the commands to reestablish the connection: ipconfig/release, ipconfig/renew without success. On ipconfig/renew I get the error: "The RPC server is unavailable". It's difficult to work on this machine without a internet connection. The Malwarebytes scan ID'ed and removed the following: Trojan.BHO (5), Trojan.vundo (2), Trojan.agent (2) and 1 trojan.dropper. Also an rogue AV program: A360, (8). Any help will appreciated. Thanks.

PS: The operating system is Windows XP SP3.