Hi bjcreek,
I'd give you a simple, one paragraph answer if I could, but I simply do not have enough information to identify the problem (which could be almost anything at this point) so we need to try to both find and hopefully at the same time fix the problem.
The post is long I admit, but each of the steps are clearly and well defined with reference articles to assist you further. I think you aren't giving yourself enough credit. Why not at least try the first step only to see how it goes and I think you'll realize it isn't as complicated or difficult as you think. And there's little if any risk of causing more problems with these steps because they are well explained, do not involve doing anything that could cause harm, and if you have any questions at any time you can always post and I can help you with that part.
Also, there's a good chance one of the early steps will solve the problem and the others won't be needed - they're listed just in case and so we don't need to go back and forth over many days doing one step at a time and then waiting for me to provide the next if the prior didn't resolve the problem. This way you can move at your own pace.
I'd really like to try to help you. Please at least consider doing the first step and see what happens from there.
Of course, the decision is yours. I'll do anything I can to assist.
Good luck and best wishes!
P.S. Mac's have just as many problems (though different ones) as Windows computers, it just isn't as well publicized and Microsoft doesn't create TV ads that point out those problems as Mac does to Microsoft. There's no such thing as a trouble-free computer of any sort.