System in a restart loop

I am working on a friends computer and I am at wits end. In the upper left portion of the screen as message window says updating TCP/Ip(too fast for me to get the complete message), then an information window pops up that says” The network adaptor files have been installed. Click ok to restart your computer”. you click ok an the system starts to reboot. It will do this over and over again until you get tired of clicking the ok. I have been using safe start but not having much luck. network settings and modem was deleted, so before I can attempt to redefine the network settings(dial up) I need the computer to start windows. please Help