Adobe Photoshop Lightroom does not include an uninstaller (a program that uninstalls Lightroom for you). Therefore, to uninstall Lightroom, it's necessary to delete several files manually. Follow the instructions below to uninstall Lightroom.
Choose Start > Control Panel > Programs And Features.
Under Programs, select Adobe Photoshop Lightroom [version] and click Uninstall.
(Optional) Delete the preferences file, the catalog file, and other Lightroom files on your computer. For a list of those files and their default locations, see: