Greetings.
The computer is four months old, custom built for me by an old close friend who is a non-professional computer expert.
(Background: He's been an expert since the early 80's. He's very busy right now with his business and his life, and even when he is home that's still 1200 miles from me. And, I get tired of pestering him with questions, couldn't solve it myself, so here I am. He tells me I'm "almost a power-user" but I consider my skill level to be one step higher than "advanced beginner.")
I received the computer with Win7HP64 installed. Spent a pleasant week (I'm retired) installing my own software, and getting everything set up just the way I like it. During that week of setting up, I ran one system restore without any trouble. In the four months since, the computer has been a dream. Little problems of course, programs with their conflicts and issues, "easily" solved with google and applied thinking. No problems big enough to merit a system restore, so I have no idea which of the programs I installed (or uninstalled) might have caused the problem, because it was only a few days ago that I attempted a system restore. (Because I just wanted to see how long it takes.)
Beside the steps I outlined in my OP, I did try going all the way back to the earliest restore point (which was about six weeks back). No luck. Interestingly, the computer has no trouble creating new restore points.
I also tried removing Kaspersky IS. Made no difference.
In looking at earlier threads here, I've seen reference to the System File Checker (sfc /scannow), but decided to ask questions first.
I may go ahead and run it a little later this evening.
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