Difficult to make a recommendation without a little more background, but here's my take on it...
Could it be someone who is of the "computer illiterate forum newbie" school who is just clicking buttons almost at random as an experiment without realising the implications, for which gentle off-forum encouragement and explanation would help?
Before a banning I'd be inclined to wait until until a second burst of activity.
If I felt the posts particularly disruptive to the general content of the forum, I might move them to a hidden sub-forum, and await reaction. I tend to be disinclined to delete anything except very obvious spam, so I have the option of either reinstating it or be able to quote the posts accurately later should it be required as "evidence".
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.