If it was the database, ther are many tools to fix it. I have yet to lose a database when people contact me for support. Well, one actually, but they deleted it and emptied the recycle bin. There should be daily backups in your Autobackup folder. If not, there are tools to repair it ranging from simple batch files in Mysql\bin such as RepairISAM.bat, and some aggressive settings in My.ini that will force it to recover. Also there is an Database manual that covers these steps. However sounds like you've started over. Look to see what's in your Autobackup folder. there should be at something in there including backups of the entire database.
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