Access rights of administrators
I am no expert on security in windows but I think a lot of the problems of
lack of access are due to a default security setting which I mentioned in
Right click a folder/shortcut/whatever; go to properties and click the
security tab. The ones on my machine which have access problems have a group
named "Everyone". I think it is this setting which removes access rights.
Select the group Everyone and then scroll down to the bottom of the rights
list and you will probably see a tick in the Deny column against Special
Permissions. The simplest solution, if you have administrative rights is to
select the Everyone group click edit and then Remove.