How do I change which programs open on startup?

In the System Preferences window, open Users & Groups. In the Users & Groups window, click the Login Items tab. Select an application and click the minus button to remove it from the startup list, or click the plus button to add an application to the list if you want it to run on startup.

How do I turn off programs at startup?

Go to Task Manager by clicking the Windows icon, select the settings icon (gear symbol), then type Task Manager in the search box. 2. Select the Startup tab. Highlight any progam you don’t want to start automatically, then click Disable.