I don't believe you can. They have these restrictions so that someone can't get on a public computer and mess with it. If there was ways around these then there would be no need for these restrictions.
Admin, local host, main user.
You can not do that because virus uses programming to edit in registry. If you are trying to recover registry after virus has edited them then your efforts are worthless because best antivirus Kaspersky too fails to do that. This is because,registry is basically collection of settings which user wants for himself.Due to this reason any antivirus does not interfere with registry.
for default user: admin pass: admin
User: Admin Password: secure
In domain the adminstrator/ admin group/enterprise admin has rights to create user.
iPods don't have user accounts, so there's no real admin, just a single user (you) with universal permissions.
An admin account allows for the user to have all the permissions to the computer and is known as the top level user. A user account has some permissions but not full access permissions to the OS that an admin would have. Based on greater permissions: 1. Admin 2. User 3. Guest
To remove an administration password on Microsoft xp,simply go to start,control panel then go to user accounts.In user accounts,click on administrator and the click create a password.After clicking on create a password,type in the current password and click change password(Do not insert a new password or hint,just type the current password and click change password.)That will remove the password in the administrator profile.
Admin passwords are set by the individual user so a password from anywhere else would not be recognised by any other Mac.
admin option
current user, local machine,regedit,user
registry