When installing, it makes various "suggestions". Untick the "join in with feedback" box.
DO NOT USE THE "EXPRESS" OPTION.
Click "Custom" and unclick the "Amazon toolbar" options. Unclick the "install tuneup utilities". Select components, click "Custom" again. Allow the desktop icon, install. This should leave you with both a working converter AND a working computer.
If you use almost any freeware these days, you have to run the gauntlet of having nuisanceware thrust on you during installation. Removing spamware after can be a long-drawn out pain in the neck. Best to try to avoid it in the first place.