(1) Explain your problem as best as you can. Don't simply post "XYZ Isn't working". What is it you expected or wanted? What were you doing when you faced the problem? What have you tried to resolve - did you look for a solution using "Search" ? Has it happened just once or several times?

(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.