Microsoft Window XP, 7, 8, 10 has a hidden administrator account called System administrator built in account. Many or People are asking how to delete system administrator built in account. There are no option available to delete this built in account you can enable or disable this account for Microsoft window security purpose. Net user command a powerful command is used to enable or disable. Over all one another method exist to complete this process.
Here is Video Tutorial for Window 10
https://www.youtube.com/watch?v=IBYQUxQROCY