Windows 8.1: Finding Your IP Address

This will describe how to find Windows 8.1 IP address:

1. In the Search bar of your Start menu, type cmd and click cmd. 

NOTE: This can also be done using the Windows key + R and entering in "cmd".

2. In the Command Prompt window, type ipconfig. Your IP Address is under IPv4 Address in the middle of the screen.

Referenced from: Windows.Microsoft.com