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Troubleshooting the MySQL Installation

Configuration Wizard Hangs While Processing the My SQL Configuration on Windows

Symptom:

After the Configuration Wizard starts, it stops responding during the Start service step. The MySQLInstanceConfig.exe and services.exe processes use an excessive amount of CPU.

Solution:

During a successful installation, the Start server step takes a few seconds. If it takes a few minutes, end the configuration process and reinstall MySQL.

To reinstall MySQL:

1. End the MySQLInstanceConfig.exe process using the Windows Task Manager.
2. Uninstall MySQL using Add/Remove Programs.
3. Delete the following directories:

   C:\Documents and Settings\All Users\Application Data\MySQL
   C:\ProgramData\MySQL
   

   Note: These paths have hidden files so you cannot see the files using Windows Explorer.

   To delete the hidden files, open a Command prompt and run the following commands:

   cd "c:\Documents and settings\All Users\Application Data"
   rmdir /S MySQL 
   

4. Delete the MySQL data files directory, for example:

   C:\MySQL Datafiles
   

5. (Optional) Remove MySQL from the Windows registry.
6. Reinstall MySQL in a different location, for example:

   c:\MySQL\MySQL Server 5.5
   

   Note: To install MySQL in a different location, select Custom as the setup type.