have the same problem, i always get stuck at the wp-admin/setup-config.php?step=2, goes blank after awhile,
tried different solutions, such as Increasing the WordPress Memory Limit
to: define(‘WP_MEMORY_LIMIT’, ‘128M’) on the installation process files;
also tried: changing the max_execution_time to 90 in the PHP.ini:
checked the myphpAdmin for the database content and it seems that it deploys the database tables, but don’t actually writes nothing to wp_users table, it’s empty.
running on: Windows 7, Apache 3.2.1, PHP 4.2.6, MySQL 5.6.16