Find Your Local IP Address In Windows 7

Your computer will have an IP address assigned when it joins an Ethernet network, so that the network can locate your computer easily. It allows you to communicate with other computers residing on the same network.
Majority of the computer users need not worry about their IP Address as the DHCP of their local Internet service provider does the job for them. However, for people such as system administrators, knowing the IP address is important. You can follow these Windows Tech Support guidelines to retrieve the IP address of your computer.
Instructions:

• One simple method to access your IP address is by navigating to the Windows Command Prompt interface. To open the Command Prompt, click the Start button, select All Programs and then click Accessories. Finally, select the Command Prompt option from the list.
• An alternative method to open the Command Prompt window is by clicking the Start button and then typing CMD into the Search box field found in the Start menu.
• You will receive a window with a prompt (C:\Users\username>) on your screen. Type ipconfig into the Command Prompt window and hit the Enter key, to run the command.
• You will receive a long list of information on your Command Prompt window out of which IP4 Address is your internal IP address that is used by your computer to communicate with your local network. The IP address of your computer is a numerical representation, which looks similar to 192.168.1.100. 
• So if you find it difficult to use the command line interface, you can switch to the Control Panel method. Open your Control Panel window, double click on the Network and Internet option and select the Network and Sharing Center. Then click on the Change adapter settings link located at the top left corner of the window.
• Select the type of network, which is either Wireless Network Connection or Local Area Connection by double clicking on the link.
• You will receive the Connection window on which you need to locate the Details button and click on it.
• The new window will list out the IP address information of your computer, out of which IP4 Address is your internal IP address that is used to communicate with your local network.

If you have any further doubts on this, contact the Windows tech support team and get more assistance. You can also find related topics on the Windows Help menu.