This error is often encountered when installing the MySQL database, and when you click the Excute button when you install to the last step, you are prompted not to start the service. The main reason is because it was previously installed and is not cleaned up when uninstalled.
The solution is as follows:
First uninstall the original MySQL service from the computer's control Panel.
After the uninstallation is complete. Open the Documents and Settings\All Users Directory, there is a Application Data folder, if not, that is he hidden, (tool----Folder Options----Show hidden files), open application Data folder, there is a MySQL folder, delete, and then reinstall, and finally in order to completely clear, in the input cmd where input regedit.exe. Direct ctrl+f look for the MySQL registry and find a delete one. or download the registry cleaner. Then you can reinstall it.
This article is from the "Java White Battlefield" blog, be sure to keep this source http://8023java.blog.51cto.com/10117207/1689619
Starting service error when MySQL database is installed canot start service