First try this:
Case of the mysterious issues with UAC in Windows 7 and Windows Server 2008 R2 @ The Experience Blog
Then these different posts:
You get padlocks on folders and files in Windows 7 when low permissions have been removed i.e. users, guests account, authenticated users from the folder. Follow the bottom half of this webpage starting from
Changing Permissions
Change the permissions and take ownership of your files and folders | Windows Vista for Beginners
Where they add Administrators add Authenticated users instead.
If your having problems with the sub folders still after that. Then from the Security tab, hit the advanced tab then change permissions at the bottom then tick 'Replace all child object permissions with inheritable permissions from this object' and hit OK.
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I've tried to get the ownership of my folder, it failed on first try because I only gave full control to administrators. I've written Administrators to owner, and it worked. It looks like the problem has solved.
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When I right clicked on properties and security tab, then advanced and made my username (setup as admin) i told Windows 7 that i was now the new owner, it did not work. So i thought, why restrict this folder to just me. So, i clicked on Onwer tab, then click edit, then other users or groups and typed "EVERYONE" so after i applied it, it worked.