is your PST file (Contact Folder) empty and also all other folders or is the
"Outlook Addressbook" empty if you create a new email and after you click on
"To" you see nothing?
if you deleted an Outlook profile, normally you didn´t delete a PST file.
All information of Outlook are stored in a PST file.
Search on your harddisk für "*.pst" file and ifg you find more then one,
maybe this is the file you are searching for. You can open this PST file in
Outlook under "File/open" but at first you must find the *,pst file.