윈 도 우 시작프로그램 Setuplancher 삭제하는 방법 없을까요?

I'd recommend downloading and running Autoruns:

아래 프로그램을 다운 받으시고
https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns

After running Autoruns search for a Setuplauncher entry,

you should be able to see the path of the file, also if the entry is in yellow color

that would mean the file is not on the computer,

and you can delete the entry directly(through Autoruns , right click entry > delete)