Can't login from loging page

Apache, data base, php modules and ll dependences was already installed (I use virtual server and virtualmin). So, I created new virtual server (with php, apache, data base, etc) for ownCloud and then uploaded the “ownCloud Server Archive File”, extracted it, opened in browser and pressed pressed FINISH instalation. No errors. The tables in data base was created. Now I am able to open the login page but the login input (button) is disable=‘disabled’.

When I delete (using Chrome’s Inspect funccion) the disable=‘disabled’ from input I am able to log in but have blank content with all links disabled.