Moved servers and now wp-config doesn't work.

I just moved over to a new server. When I first loaded up the screen was white screen. Via some advice from the internet I deleted the wp-config.php file, went though the startup steps again. This brought the site back on, but it is not multisite, nor is it handling the domain mapping and other settings from your plugins and others. Can anyone help me get the wp-config.php file working again or have an idea on why it would not work on the new server?