You don't need access to MySQL to replace tables
In the the data/MySQL folder there is 3 files
User.frm
User.myd
User.myi
If you just replace these 3 files with default files from a wamp install, you can gain access to the db with out even uninstalling.
The reason you see it all depends on the version of MySQL in the wamp bundle, if it's a different version then it won't overwr
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