If you have tried many IPs for login into your router but have still no luck then instead of being angry and banging your head against the wall, just give yourself 2 minutes (yes we mean it). So just relax take a deep breath and follow the tutorial below that relates to you.
We can find login IP address of your router using command prompt. This method is very easy and prime benefit is that it is supported in all versions of windows. Use of command prompt program is same for all Windows operating system (i.e Windows 7, Windows Vista, Windows XP and others). Command prompt program are available in all windows operating system, name of file is cmd.exe.
Note: Commands in cmd are not case-sensitive, i.e. Upper case or lower case doesn't matter.
$ ip route | grep default
default via 192.168.1.1 dev eth0 proto static
In Chrome OS, there is a section called ifconfig. We will use the same to address this issue.
The results of running ifconfig can be viewed by opening a browser, typing chrome://system in the omnibox, and expanding the ifconfig section as shown below. This is a useful way to view the IP address, MAC address, and network statistics. As you can see below, our desired field may be inet addr : 192.168.1.109 in our case.
Please note that there is no direct way to find default router IP. So people have developed different apps for this purpose. These are easy to install and use. One such app is Android Terminal Emulator which can be installed from Google Play.
After the application has been started, there is need to put "ip route show" command.
This command displays the default route. As can be seen in the example above, the IP address of the default gateway is 192.168.4.1 and traffic goes via wlan0 interface.