MYSQL安装时解决要输入current root password的解决方法
在装MYSQL的时候发现要输入current root password不记得以前在电脑里装过（你的系统曾经装过MYSQL在重装就会要求输入原来设定的密码，如果是第一次安装就不会出现），在网上苦苦搜寻解决方法。
终归结出以下解决方法：1.清除MYSQL的安装目录,默认是C:\Program Files
2.清除MYSQL数据存放目录，一般在C:\Documents and Settings\All Users.windows\Application Data目录下
（需要注意的时Application Data这个文件夹默认是隐藏的，要通过 工具->文件夹选项->查看->显示所有
文件与文件夹 来设置隐藏文件可见）。
删除MySQL文件夹
3.这步很重要，之前不管我怎么卸载MYSQL清空残余文件都还是要输入原始密码，后来试试找了下，清空后果然有效。
删除数据，通过regedit，删除以下几个文件：
引用
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
最后 万事OK！！！。。。
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