Input CMD inside the search menu in the Start field. At this point, you should press enter and type ipconfig. You will see your current Router IP. Steps to change the administration options Every single letter in the security password and user name is casesensitive. Be careful to stay away from any error. To change the wireless router options, open up the web browser first. After that, you must enter the Router IP of your wireless router. Next, you need to input the details of your wireless router. So next, you would be logged in as an admin. Write the account information and preserve them somewhere secure.