The data for BE is stored in your: %installationdir%\Data folder. This would include catalogs, and more importantly your database.
If you have this, copy it across, and in beutility.exe, select the option to load the database from backup.
Beutility.exe --> All Media Servers --> right-click your server name and choose Recover Database --> Drop existing database and reload from backup
If this doesn't work, stop your BE services, and rename your current Data folder to Data_old. Copy your backup Data folder into the installation directory, and then restart your services. THis should now redetect all your media information, job information etc.
Please let us know if this works.