Strange. The directory "C:\Windows\system32\config\system profile" and beneath don't exist on my system. Are you part of a domain by any chance?
Permissions - go into the Security tab for the Windows folder and click "Advanced". Double-click on "Trusted Installer" and all the permissions should be ticked in the "Allow" column. There are two sets of permissions for "SYSTEM". One for "Subfolders and files only" should again have all items ticked. The other, for "This folder only" should have all ticked except for "Full control", "Delete subfolders and files", "Change permissions" and "Take ownership".
The above is how my system is and I have no problems.