That's the best I can do. AND Liquid plumber at the SAME time. For liability reasons they can only make a drain cleaner so strong. Put a measure of powdered Drano down and instead of water use a cup of Liquid Plumber. Don't breath anywhere near your sink and keep your face away from the sink and leave your windows open.
Every few minutes check the drain pipe under the sink until it is no longer hot.
If it is getting too hot to touch add cold water. For a real stubborn clog, don't rinse until the next day. I though that is a good machine and their service was very good. I don't know how Dell gets a high rating for service. It takes at least a half an hour before you get to speak to a live person.