Installing wordpress in wamp

I am trying to install wordpress in wamp. I have put unzipped wordpress folder inside my www directory, but couldn’t get through the first step of installation. I have filled in everything but I got error “table prefix can’t be empty” even though I have filled it in. I then tried to fill in wp-config manually through editor. After I did that and tried loading install.php it went loading for a long time, at the end I was left of with blank page. How should I install WP?