|Instead of addressing a symptom, in this case stopping a program after it starts, try addressing the problem, prevent the program from starting in the first place.|
To my knowledge, there are three places where programs start automatically:
1.) The Startup folder
2.) The "Run" key in the Registry
3.) As a Service
For #1, you can simply delete the shortcut in the Startup folder.
For #2, open Regedit and navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and delete the offending value.
For #3, open Services.msc and set the offending Service to Manual or Disabled in it's properties.
BE AWARE! Making a mistake with either 2 or 3 could have adverse effects on how your computer runs. So it's not wise to indiscriminately delete values in the Registry, or to indiscriminately disable Services.
When your only tool is a hammer, every problem looks like a nail.