If you're not sure about Safe Mode, the Windows Help file explains it all, and Alwil's simple instructions make this tool easy enough for even novices to run without fear. Some folks will stop reading right there, but not to worry-it's not called Safe Mode for nothing.
Avast! developer Alwil has provided a solution in the form of a free uninstaller, the Alwil Software Uninstall Utility, aka AswClear, which works in Safe Mode. While we've installed and uninstalled Avast! many times through the built-in Add/Remove Programs utility on the Control Panel with no problems, we sympathize with those who do experience issues. Antivirus tools are among the most reluctant to be removed, and Avast! is no exception.
But like certain horror movie stalwarts, some software just doesn't want to say goodbye. Uninstallation comes to every app, sooner or later.