Not only one Startup directory,
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp C:\Users\euhat\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Themes downloaded from Windows Store,
C:\Users\euhat\AppData\Local\Microsoft\Windows\Themes
Linux subsystem Ubuntu,
C:\Users\euhat\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_xxxx\LocalState\rootfs
Need to clean,
C:\ProgramData\Package Cache Control Panel\All Control Panel Items\Administrative Tools\Task Scheduler\Task Scheduler Library\Microsoft\Windows\Application Experience\Microsoft Compatibility Appraiser
refer to:
https://blog.csdn.net/weixin_48160438/article/details/113413048