Windows 7 change folder permissions when options are greyed out [duplicate]

Solution 1:

Try the command line of taking ownership and setting permissions.

a. Go to > Start > All Programs > Accessories

b. Right-click on Command Prompt, and then click Run as Administrator.

c. Type the following command and press Enter key:

takeown /f [path to folder] /r /d y

EDIT:

if that does not help try resetting permission on the entire drive

example is usb drive D: run 2 commands, first sets the target drive, second resets the permissions for the target drive D:

D:

icacls * /T /Q /C /RESET

Once permissions are reset see if you can delete or take ownership if needed.