If you cannot get in to the ACP
If you are unable to get to the ACP because the site is not working for some reason (usually due to crashed MySQL tables), try this:
There is a file in the main folder of your Jamroom installation called repair.php.html
When you access it via your web browser at http://YOUR-SITE.COM
/repair.php.html will show:
Quote: This file must be renamed to repair.php to function!
so login to your server via FTP and rename it to repair.php
and you will see: