One of the parts of the Internet connection on any computer is a built-in set of instructions called TCP/IP and it sometimes can become corrupted. If you are having problems connecting to the Internet or other network resources, and you have pulled your hair out trying all other methods, you may have one last option.
Follow these steps to use the reset command to reset TCP/IP manually:
1. To open a command prompt, click Start and then type CMD in the Search programs and files.
2. Right-click CMD.exe icon in Programs and choose Run as administrator.
3. When the User Account Control box pop up, click Yes.
4. At the command prompt, type the following command and then press ENTER: netsh int ip reset c:\resetlog.txt
5. Reboot the computer.