How To Rescue Content from a Corrupt Database
The database isn't likely to be corrupt - unless you're coming up against a ridiculously unlikely scenario, it wouldn't work for any users at all if it was corrupt.

If the data was corrupt, you wouldn't be able to restore the backup, it would fail.

What you need to do is look into the server logs; you're currently seeing a WSOD (White Screen of Death), which is common in PHP applications.

Your server logs will contain details of the exact error your site is encountering, and you can use that information to decide on how to debug and fix it.