i have try to set up guest account
then i try to deny the permission to access of C drive to the guest user account
by clicking right click on C drive and go to properties and security tab.
but unfortunately i have done some wrong setting
now the C drive became not accessible and saying access is denied for all user account even in administrator account.
how can i reset it?
i tried to restore the previous setting
it i could not open C drive
it is make me very upset