Question posted in 
My core wordpress files got hacked because of a plug in. My site started giving malicious redirects.
While trying to edit wp-config.php, my site went fully offline. I tried a full manual reinstall because of this and I needed new core files anyway. My site is still not online. I have the database, database password, and username in wp-config.php. Also, I have everything in the document root for the correct domain. Maybe there is some conflict between the two domains with my host?
Does anybody know what might be causing this 404. I can’t get access to the dashboard.
I got a backup before doing anything and I downloaded wp-content. The original database is still available.
I tried an automated install through cpanel with fresh everything and this would not get me to a dashboard.
2
Answers
Well, 404 error is not because you can’t connect to your database. You should see Database connection error message if database is the problem. Did you edit .htaccess file maybe? You can try to remove everything there and put default one for WordPress.
May be your site compromised. Deactivate the plugins using the file manager provided by your host and rename wp-content/plugins to wp-content/plugins-old, also deactivate the theme or rename the wp-admin folder on root directory and then take a try to login. Also turn on the debugger.