The following are some of the most common installation problems. For more information and troubleshooting for problems with your WordPress installation, check out FAQ Installation and FAQ Troubleshooting.
I see lots of Headers already sent errors. How do I fix this?
You probably introduced a syntax error in editing wp-config.php.
My page comes out gibberish. When I look at the source I see a lot of “<?php ?>” tags.
If the <?php ?> tags are being sent to the browser, it means your PHP is not working properly. All PHP code is supposed to be executed before the server sends the resulting HTML to your web browser. (That’s why it’s called a preprocessor.) Make sure your web server meets the requirements to run WordPress, that PHP is installed and configured properly, or contact your hosting provider or system administrator for assistance.
I keep getting an Error connecting to database message but I’m sure my configuration is correct.
Try resetting your MySQL/MariaDB password manually. If you have access to MySQL/MariaDB via shell, try issuing:
SET PASSWORD FOR 'wordpressusername'@'hostname' = OLD_PASSWORD('password');
If you are using a version of MySQL prior to 4.1, use PASSWORD instead of OLD_PASSWORD. If you do not have shell access, you should be able to simply enter the above into an SQL query in phpMyAdmin. Failing that, you may need to use your host’s control panel to reset the password for your database user.