This Software Removal Tool can be thought of as a last resort, nuclear option for fixing Chrome without completely reinstalling Windows. The app runs in two phases. The first scans your computer for any toolbars or other junk that may have been installed that can affect Chrome. The second step—which can be canceled—offers to uninstall your extensions, reset your browser settings, and clear various cache and cookies.
In most cases, you probably won't need to use this to fix a simple problem. However, if you frequently find yourself fixing a family member's computer (and they use Chrome), this tool is a handy do-it-all method of clearing out junk and starting fresh. It's no substitute for proper security software, but it can definitely help fix many problems in one fell swoop.