If you have problems uninstalling MySQLServer 5.5(mysql-5.5.9-win32.msi) in Windows 7, there are 4 easy steps.

1. Run C:\Program Files\MySQL\MySQL Server 5.5\bin\MySQLInstanceConfig.exe >> NEXT>> REMOVE Instance>> NEXT>> EXECUTE>> FINISH

2. Run MySQLServer Installer 5.5(mysql-5.5.9-win32.msi) >> NEXT>> REMOVE>> REMOVE>> OK>> FINISH

3. Delete the folder C:\Program Files\MySQL

4. Delete the folder C:\ProgramData\MySQL

REINSTALL MySQLServer 5.5(mysql-5.5.9-win32.msi) - With NEW PASSWORD...

hopefully useful..work 100%

If you have problems uninstalling MySQLServer 5.5(mysql-5.5.9-win32.msi) in Windows 7, there are 4 easy steps.

1. Run C:\Program Files\MySQL\MySQL Server 5.5\bin\MySQLInstanceConfig.exe >> NEXT>> REMOVE Instance>> NEXT>> EXECUTE>> FINISH

2. Run MySQLServer Installer 5.5(mysql-5.5.9-win32.msi) >> NEXT>> REMOVE>> REMOVE>> OK>> FINISH

3. Delete the folder C:\Program Files\MySQL

4. Delete the folder C:\ProgramData\MySQL

REINSTALL MySQLServer 5.5(mysql-5.5.9-win32.msi) - With NEW PASSWORD...

hopefully useful..work 100%

This is actually will remove all the MySQL modules installed on your computer. If you want to remove a specific module, can be done this way:

1. same as above
2. Run MySQLServer Installer 5.5(mysql-5.5.9-win32.msi) >> NEXT>> REMOVE >> just remove the specific module ie: MySQL Server.
3. Delete the folder of the module you want to delete ie: C:\Program Files\MySQL<MySQL Server 5.5>
4. No need to delete C:\ProgramData\MySQL since it will be overwritten by step 5
5. Reinstall the module using the .msi file.

Hope this helps more ;)