1.停止mysql服务
2.控制面板卸载mysql软件
3.删除注册表win+r 输入regedit
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Application/MySQL
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Application/MySQL
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Eventlog/Application/MySQL
4.删除mysql相关目录文件
C:\ProgramData\MySQL
C:\Documents and Settings\All Users\Application Data\MySQL
5.mysql服务删除
mysqld --remove
6.重启电脑