CPU-Z is a freeware that gathers information on some of the main devices of your system : 
https://www.cpuid.com/softwares/cpu-z.html


Windows Server Troubleshooting: "The RPC server is unavailable"  https://social.technet.microsoft.com/wiki/contents/articles/4494.windows-server-troubleshooting-the-rpc-server-is-unavailable.aspx

What is ncpa.cpl?   Microsoft Windows network connections properties control panel file.