There may be related items in group policy. But that won't solve your problem because the group policy editor is available to all admin users. All admin accounts are equal. Any changes you might make in group policy, in the registry, or anywhere else, can be changed or reversed by any other user with an admin account. This is by design.
The use of the Administrator account has been suggested elsewhere as being a solution. But that can't work either. Any user with an admin account can change the password to this account as they wish, even without knowing the existing password. This too is by design.
When you give someone admin access you have given them the exact same access you have. You can try to lock things down but all admin users have the keys to unlock them. This is inherent in the admin account and is by design.
Any attempt to restrict users with an admin account is doomed to fail. With novice users (who shouldn't have an admin account anyway) you would have some success. But for users with any real knowledge you have no chance.