Now, upon upgrading, PC will not sleep predictably when set to an idle interval of 30 min., even if 'powercfg /requests' shows 'none.' for every category. I had two 'powercfg /requestsoverrides' set via command line to ensure that this happened, however. On windows 8, PC slept predictably when set to 30 min. I recently upgraded my PC to windows 8.1 from a ~2 month old install of windows 8.
