First of all, be aware that not everyone can change their IP address. IP addresses are provided by your Internet service provider. Some Internet Service Providers give you a static IP address (it never changes for the entire period of your subscription), and other Internet Service Providers give you a dynamic IP address that changes every 24 hours or so so that changes when you restart your ADSL modem. As stated in this article: What is an IP address, you can also use a VPN that will allow you to change IP address as many times as you want. even if your ISP provides you with a fixed IP address.
How to change my IP address on windows ?
Click on Start
Click on execute
Enter the CMD command
Enter the following command: ipconfig / release and then enter
Then enter the following command: ipconfig /renew and then enter