Can't Install Wireless Network On PC - TCP/IP?

I have cable internet with a wireless router. My home computer/internet works fine My second computer connected via wireless was recently infected with a virus and I had to do a complete system restore. Since doing that, I cannot establish a connection. My computer can find the wireless connections and the wireless network connection shows enabled show that it but no IP address. If I repair, I get the error message "TCP/IP is not enabled". I tried enabling, reinstalling, I have tried every suggestion on this topic that I have found in other forums (running command, etc).