I did a fresh install of windows 10 and everything seemed to work fine. After installing updates (mostly windows 10 updates and two nvidia geforce 650 drivers - not sure why there were two of them) my PC does not shut down. Before the updates, I had two options: restart/shutdown; now I have three restart?shutdown/sleep. When I click on restart or shutdown, nothing happens. I had this experience on two separate drives (one SSD and a HDD). This is very frustrating.... Does anyone have any suggestions on how to fix this? Thanks!!