My WP install worked fine for months and then something got corrupted and I kept getting blank admin pages after saving an entry, or clicking any update button. I should have dealt with that but I didn't--just kept posting entries and other stuff because I could. Then the blog itself disappeared and I got the following message when I tried to reinstall WP, hoping that would work:
You appear to have already installed WordPress. To reinstall please clear your old database tables first."
I don't know how to clear my old db tables, and I don't want to lose five years worth of entries. Is there any way to restore the db?