I was recently modifying the security settings for my drive C. I did not notice that i was logged in as a user and changed the permissions for users to "read". Later i realized that there was no admin set up on the pc (when switching user). Now with the security settings changed I can't do anything on the computer. I can only read the files that previously existed. And this applies to every drive on my computer. Now the user accounts do not have the privileges to change the permissions. How can i allow users to have full control without having admin on my pc