, uninstall MySQL
2, delete directory C:\Documents and Settings\All Users\Application Data\mysql (This really has, originally did not notice, delete!) )
If the folder is not displayed, in toolbars-settings-view, select Show All Files and folders
In addition to its computer installed Apache, in order not to accidentally (although there is no accident) will be Apache stopped.
3, delete C:\Programfiles\Mysql
4, clear the following registry key (if they were there):
Hkey_local_machine/system/controlset001/services/eventlog/applications/mysql
Hkey_local_machine/system/controlset002/services/eventlog/applications/mysql
Hkey_local_machine/system/currentcontrolset/services/eventlog/applications/mysql
OK, Reload, all the way next ...
This time to set the security password step does not appear the current root password one, prove this is a new installation!
excute!
To start service one step of the process is slow, the heart was disturbed, a succession of three Nike:
Re-install MySQL steps