So, today I downloaded Avast I didn't really like it so I did the normal routine and I uninstalled it, now while simply searching avast in my C drive it came up with all these left over files. I couldn't delete them because they were either running in the background or I didn't have permission to delete them. I also came across another problem where under a restart there an option to load up Windows 10 or Avast uninstall utility, does anyone know how to permanently delete them? Thanks.