WP localhost install with XAMPP – cannot edit anything

I have a website setup using wordpress. Now I’m looking at doing a new website and found out about xampp – sounds fantastic! So I installed xampp, got wordpress installed, everything looks great. I go to create a test page (I’m testing plugins for pictures), and I can edit, but when I save, it just goes away. I went to the default About page (already has info filled in), I changed it to “TEST TEST TEST”, click update, and when the page reloads the original text is back. (Clicking Preview has the same result – nothing that I enter shows up).

I really have no idea what’s up – HELPPPPP!!