In Chrome, back up your bookmarks. If you sync Chrome with your Google profile, you can omit this step. Uninstall Chrome and choose to delete your browsing data (check box).
In File Explorer, delete all of the Google Chrome remnants. If you're using other Google programs, only delete the Chrome folders. If you're only using Chrome, you can delete the whole Google folders.
Manually delete the Google folder in:
Program Data -hidden
Program Files (x86)
Just uninstalling Chrome won't remove configuration files. Even the Reset Chrome tool within Chrome does little for major issues like this.
When all Chrome remnants are gone, reinstall Chrome and restore your bookmarks or log in to sync.