I can't install CiviCRM on Wordpress
In your php.ini, what is your max_execution_time? I think the default may be 30 (sec) you may want to increase that.   Also I think at least with Civi 4.7 the install will try to install in the WP database, are you 1) selecting a different database (and user) or 2) using the WP one?  Are ANY tables ending up installed for Civi?