I`ve always worked on the KISS system. Keep It Simple Stupid. In four years we lost three hard drives. One in A Sony Vaio and two in the Apple in less than a year. We got the Apple back about a month ago and it was sluggish and doing weird little things. The screen was supposed to shut down in 15 minutes on power saver. Sometimes it would, sometimes it wouldn`t, staying on all night on one occasion when I was testing to see what would happen. Just weird little things. The one thing in common was the power bar and its surge protection. I got to reading a little about AC current and how you can have a clean sine wave or a ragged one with interference. Anyway, I bough a top of the line power bar and hooked up the other day. All the bad little gremlins seem to be gone gone. Is there something in the surge protection circuit that could cause interference and ``noise`` that would affect the computer. A shot in the dark from a rank computer amatuer but what to heck. Might just be coincidence. I always say that I work a lot better with wrenches in my hands but they do terrible things to computers.
Thanks again for helping an amateur. It does take patience on your part.