MYSQL-5.6安装时解决要输入current root password的方法_MySQL
在装MYSQL的时候发现要输入current root password
(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)
终归结出以下解决方法：
1,双击 MYSQL installer主程序 出现下面窗口 点击Remove MySQL Products.
2,出现下面窗口，全部勾选，点击Execute等待下以页面的出现，另一个页面出现后继续全部勾选并点击下一步等待完成。
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，后来试试找了下注册表，清空后果然有效。
删除注册表数据，通过regedit，删除以下几个文件：
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
***
注册表中的ControlSet001,ControlSet002,不一定是001和002,可能是ControlSet005、006之类,删除的时候,都删除就可以了，之后的就不会出现current root password的对话框了。
教您如何彻底删除SQL Server注册表
在卸载SQL Server后，大家都希望能够将注册表信息完全删干净，下面就将教您彻底删除SQL Server注册表的方法，供您参考。
在卸载SQL Server后，开始——运行：输入regedit 进入注册表编辑器，进入之后执行下列操作：
1.彻底删除SQL Server： //下面各项有的则删除，没有则不作操作
hkey_local_machine/software/Microsoft/MSSQLServer
hkey_local_machine/software/Microsoft/Microsoft SQL Server
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/MSDTC。
hkey_current_user/software/Microsoft/Microsoft SQL Server
hkey_current_user/software/Microsoft/MSSQLServer
hkey_local_machine/system/currentcontrolset/control/session manager/filerenameoperations
HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/setup
删除ExceptionComponents
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