Here are some steps to disable a program from automatically opening on startup:

1. Find the program on your computer. Sometimes you can find it in the Start Menu.
2. Check if the program has an option to disable or enable it from running automatically on startup. It might be in the program’s Settings. If it doesn’t have this option, go to the next step.
3. Search online for instructions on how to disable the program from running on startup. It might involve making a few changes in the System’s Registry.
4. Close the program. Make sure it is not running in the background.
5. Restart the computer to see if the program is no longer running automatically.