How To Disable Steam Running On Startup [Quick & Easy] Beginner’s Guide

How To Disable Steam Running On Startup [Quick & Easy] Beginner's Guide. Fortunately, there are a few methods you may prevent this from happening, such by turning it off in the Steam client, stopping it in Windows Settings, or turning it off in Mac System Preferences. You can follow the instructions below to stop Steam from starting up automatically, especially if you're concerned about long boot times.