How to uninstall a component in Joomla 2.5?
If you want to uninstall an external component in Joomla 2.5 you should navigate to the Joomla 2.5 admin area -> Extensions -> Extension Manager.
Open the Manage tab. Select Component from the Select Type drop-down menu. Search for the chosen component in the filtered results and click on the check box besides it. Find the Uninstall icon in the upper right Joomla 2.5 menu and click on it to completely remove the chosen component.
Note that the Joomla 2.5 core components can not be uninstalled.
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