Summarize this article in one sentence.
Click the Windows logo in the bottom-left corner of the screen. This will search your computer for the Command Prompt app. It's at the top of the Start window. Doing so opens Command Prompt. This command finds and displays your computer's IP information. Doing so runs the command. You should see some information appear in the Command Prompt window after a brief delay. To the right of the "IPv4 Address" heading, you should see a number (e.g., 123.456.7.8). This is your computer's current IP address; the final number in the address represents the spot on the network that the computer occupies. When you refresh your computer's IP address, only the last number is liable to change—and even then, the number might not change. Type in ipconfig /release and press ↵ Enter. This will remove your computer's IP address and disconnect you from the Internet. In order to maximize the chance for your router to reorder its currently connected items, wait for at least five minutes before renewing your computer's IP address. If you're in a hurry, you can skip this step. Type in ipconfig /renew. After a few seconds, your IP address will be restored, along with your connection to the Internet.  Don't panic if your IP address is the same as it was before—that just means that the best possible IP address for your computer was determined to be the one that you had before. You can exit Command Prompt at this point.

Summary:
Open Start . Type in command prompt. Click  Command Prompt. Type in ipconfig. Press ↵ Enter. Review your current IP address. Enter the "release" command. Wait for a few minutes. Enter the "renew" command.