Impossible to delete a file in Windows 7

I downloaded Cygwin, did something wrong, deleted it entirely, and reinstalled it.

Somehow I then did something very wrong with the result that I now have absolutely no permissions on any account to do anything to the .SSH folder, even though I'm the administrator. Here's everything I've tried but with no effect:

1. Deleted the Cygwin .reg files
2. Deleted all the Cygwin files that I could
3. Gone to the Security tab and tried to change permissions from ANY account
4. Tried deleting the folder using cmd
5. Booted into safe mode and tried deleting from there

Any ideas how I can fix this?

Solution 1:

I have a suspicion you were changing permissions with the Security dialog, rather than taking ownership, and that's why it didn't work (you weren't the owner).

Try this on the command line:

TakeOwn /F YOUR_FOLDER_PATH /R /A

This will make the Administrators group the owners. (You can take off /A to make yourself the owner.)

Solution 2:

try booting Ubuntu Live CD (or any Linux), and find the file in your hard disk, and delete...