taskkill /f /s [computername] /im [process name]
/f = force
/s = computer name
/im = image name = process name (You can also use * for wildcard here, so for example to kill all notepad.exe processes use note*)
Here is a nice little quick one that comes in handy all of the time.
If you need to start/stop/restart a service on a windows computer on your network, open CMD and use:
sc \\[computername] stop/start [servicename]
Open regedit.exe and browse to:
Change value to desired port and reboot computer. Just make sure the port you select isn’t already used by something else.