PROBLEM WITH NT KERNEL & SYSTEM

[xploit]

I hope I understand because I speak Spanish not English I am using a translator, my problem is that I want to run xampp in its default port but that port 80 is being used by a PID 4 that belongs to system with name of NT KERNEL & SYSTEM, There is no way to stop that service, someone how can change that port? I want to run xampp in that port, I do not want to change it, thank you.