What isn't working?

______ isn't working right and I'd like your help figuring out why. Here's exactly what happens: ______ Please walk me through this ONE STEP AT A TIME. Give me a single step, then stop and wait for me to tell you what happened before you give me the next one. Do not give me a numbered list of ten things at once. Start with the simplest and cheapest thing to check. Assume I am not technical — tell me exactly where to look and what I'm looking for. Also tell me up front: is this the kind of thing where I should stop and call a professional instead?