I am not quite sure where to start...as it is not a hardware issue, so me mentioning the hardware would more than likely not make the difference.
A few weeks ago, after a security update came down from Windows update, my home setup mysteriously started password locking when the remaining idle for a period of time. I do not have any other user accounts on my computer, just the Administrator account that I normally use. This same thing happens on my networked office computers, even if you aren't an administrator.
I have made sure that my screensaver is off, and I have also even messed around the power options, making sure that it was not the "one wake-up ask for password option."
I am not quite sure what caused this function to turn on, perhaps it was the security update, perhaps it was not.
Does anybody now how to turn off this function?