Hi Leo - I have been all over this section. Nothing I do seems to work. Also I am trying to get all folders to display at the top, but it does not work with the C:\ drive, though it works with the other drives.
It looks like you might have filters set to hide folders in C:, although we can't tell exactly because the image is so heavily cropped.
See what the status bar says about how many items are hidden / shown. Hover the mouse over the (i) icon (or padlock) in the status bar to find out where the format comes from.
If there's a filter set, you can clear it using the Folder Format dialog.