Unless the question is yours to begin with, do not add your own debugging information or information about the system you use to the question.
Editing a question to add that information implies you are the original poster, and know the OP's setup and specific environment, or that your system and the OP's are identical. This is usually not the case, so if you are editing others' questions to add your own information to it to try and make the question more clear, you're likely to get edits reversed or shot down.
In cases where you are affected by the same issue but want to specify your information, instead post a new question, linking back to the other one in your post, and say that its the same issue, but then also add all the missing information for your setup that the OP of the original post never added.
If one of the posted answers on the original question, though, solves the problem for you, then don't bother writing a new question - just do nothing and acknowledge that the other answer helped you quietly.
As for accepted answers or not, we can't do anything about that - only the original poster of the question can accept an answer, and if they've abandoned their post there's nothing you can do about it.