My Wife has a HP 650 Laptop running Win10 64bit Home OS. Sine a recent Windows Update (23 Feb), it infrequently, on odd occasions, goes to a Blank Screen (Not a Black or Blue Screen) and just sits there with the Power Light still on. It is not in Sleep or Hibernation Mode. After say 10 minutes I switch off the Power and Reboot, back to normal, as though nothing has happened. I might work fine for a few days and will happen again, for no known reason. It is of interest that this happen only after that Update. Otherwise all is Fine.