1.在cmd中删除mysql服务
输入命令：sc delete mysql
2.删除mysql文件夹下面的所有类容
3.运行regidit，打开注册表
4.删除mysql的注册表
删除HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\MySQL文件夹
删除HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Eventlog\Application\MySQL文件夹
删除HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MySQL的文件夹