Your laptop had a full charge at the start of the day, but by noon, you're reaching for the outlet to refill the battery. The battery percentage kept dropping even though you didn’t stream anything or run a demanding task. That’s because Windows 11 isn’t sitting idle while you work. In the background, a quiet parade of apps, services, and sync routines run constantly in the background — none of which you ever asked for. The good news is that you can stop most of them.