I receive a database setup error using MySQL 5.x on Windows, what can I do?
Might be your VAR and ETC file which executes during setup has gone corrupted due to which while set up you are getting errors.
So, in order to stop those errors you need to repair those files using very efficient software. In this circumstances I would like to suggest you MySQL Database Repair software which is simply perfect in this circumstances. So, use it and see if your problem gets resolved.
All the Best!