A lot of modern windows laptop don’t let you shut them down.
They use something called Windows Hybrid Sleep and it should be illegal. Selecting shut down in windows will keep the machine in a state where it will turn on at random times to check for updates. Especially fun whrn in your backpack creating a furnace.
Thankfully it can be disabled via AD policy.
Or just turn off fast Startup in the power settings.
I meant that you can thankfully disable it with group policy so that the 3000 laptops I manage at work don’t all cook in backpacks every day.