Resetting your network router (or modem with built-in router), rebooting your computer, or even reinstalling your network interface driver did not resolve your connection problem.
The TCP/IP is a core component of Windows and it cannot be removed. You can reinstall Windows that would normally resolve this problem or you can reset TCP/IP to its original state. The reset command is available in the IP context of the NetShell utility. Follow the steps below to use the reset command to reset the TCP/IP manually.
netsh int ip reset c:\resetlog.txt
When you run the reset command, it rewrites two registry keys that are used by the TCP/IP. This has the same result as removing and reinstalling the protocol. The reset command rewirtes the follwing two registry keys: SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ SYSTEM\CurrentControlSet\Services\DHCP\Parameters\
NOTE: If you have any custom settings (default gateway, DNS server, etc.) you will need set these again.