My admin account has been deleted and my administrator account was disable at that time.
Can we enable administrator account or restore admin account?
Are you sure it's DELETED and not just disabled?
If you're not sure if it's deleted, you can try this:
Open CMD as an admin
Type in [cpp]net user administrator /active:yes[/cpp]
Logoff (or switch user) and see if the administrator account is visible.
If you want to disable it again, just do [cpp]net user administrator /active:no[/cpp]