WOW! I think I found the problem? I updated the nVidia Chipset, just on a whim. Windows Driver diagnostics had not reported it as being a problem but I decided to do it anyway. After the update, I left the computer for about 5 hours while my wife was at work. Came back to it, woke it out of sleep mode and it was fine. Hmmmmm? So, we let it stay in sleep mode all night. This morning all was still well. So, I guess I just stumbled on a fix. If it reverts, I'll come back here to do the zip files. But, for now, all is well. Thanks for the assistance, even if we didn't have to go any further with it.