Hi!
I had the same problem (error #1045).
My problem was that I had another MySQL service running at the same time, so wampserver's mysql could not start (if you look at the log file, it says " Do you already have another mysqld server running on port: 3306 ?" and aborts the service start).
In my case the conflict was because I have sugarCRM installed locally and its mysql serv
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