"Hiya... Start - Run and type "services.msc" and press enter. The service list comes up and you can scroll down to Remote Procedure Call and change its properties. Godo luck."
-->Unfortunately after you disabled RPC, accessing to services.msc is disabled too. You can open services.msc but you can't Enable/Disable or do anything there.
THIS LINK WILL SOLVE THE PROBLEM: http://www.blackviper.com/2002/10/28/i-disabled-remote-procedure-call-before-i-read-your-advice-and-my-computer-is-broke-what-do-i-do/