Shutting down windows doesn't actually fully shut it down like it used to in the past. Some core parts of Windows are kept loaded in memory (sucking up battery) so that the next time you start Windows, it takes less time to start because some components have been kept running. So if the issue that made your Windows stuck, is caused by one of those components that haven't been actually shut down, then your "problem" might still be running. To shut down Windows completely, you need to do a Restart. Or, there is a way to configure Windows to shut down completely when "shutdown" is selected, it's called "Turn on fast start-up ", it needs to be disabled.