If the wizard absolutely refuses to work after all the above, abandon the MSI installer entirely. MySQL is just a collection of executables. You can run it from a ZIP file.

If you want a "passive" mode with a progress bar (but less prone to crashes), use:

Don't throw your computer out the window. While MySQL 5.5 is outdated (released in 2010, End of Life in 2018), it is still required for legacy applications, older CMS platforms, or specific academic environments. This guide will walk you through the 7 most effective solutions to force the installer to complete successfully.