IPv4 Questions

I tried to make a Minecraft server following PortForward.com tutorials and i failed in making one. So i removed the ports and put everything back to normal but the one thing that annoys me is the IPv4 ip address thing. In Portforward.com, tutorial it told me to make a ip address for example 192.168.0.7 but once i changed it i can't remember what was the original.I did try click the box for IPv4 properties to make it obtain the settings automatically but it didn't work. When i look at my connection details in cmd. I see IPv4 and my ip address that i made for it. Next to it, it says "(Preferred)" I tried restarting my connection, but nothing works. 

SO.... My question is, does this have any effect on my connections? With the internet, Laptop, or other devices??