I believe that the issue about professionalism is just as much reflected in the presentation of the question as it is the content of the question. New users are going to write their issue in the box and never click the link tucked away on the right side pointing towards "visit the help center" or "asking help". Why? Because you click on links related to the word "help" when you don't understand what you're doing. Posting the question itself is fairly straightforward.
How about perhaps a condensed version of the excellent Better Question ChecklistBetter Question Checklist more prominently on the actual Ask a Question page. Not a link, but the content itself. Five bullet points with concise advise on how to get an actual, serious answer.