How do I uninstall MAMP for Windows?
Open your Control Panel. Under the Programs > Uninstall menu, locate the MAMP version you wish to remove and run the uninstall process. The entire C:\MAMP folder will be removed and with it all databases contained in C:\MAMP\db\mysql\. Also, your entire root directory in C:\MAMP\htdocs, which may contain your web pages and host files, will be removed.