If MYSQL is not fully uninstalled, the installation will fail.

If MYSQL cannot be started, the following situations are not reflected: Double-hitting mysqld.exe or using command lines. Check my computer-> Management-> services and applications-> services-> mysql-> start. If the result is a path error or unexpected termination, uninstall the service and reinstall it.
The specific uninstall method is as follows:
Uninstall mysql Service
Create and edit the following bat file to execute
Copy codeThe Code is as follows:
@ ECHO OFF
Net stop mysql
C: \ mysql \ bin \ mysqld-nt.exe-remove
Pause
Then reinstall MYSQL. The installation method is as follows:
Create and edit the following bat file and execute
@ ECHO OFF
E: \ mysql \ bin \ mysqld-nt.exe-install
Net start mysql
Pause