In some workstations, mainly HP, could happen that when you try to power off the system pressing "W10-Start-Icon > Shutdown" the computer start the process to shutdown but doesn't finish, staying in Sleep Mode, this means if you ,move the mouse the login windows appear immediately.

This is caused by a default configuration of W10.

To fix it, follow this procedure.

  1. Press "W10 Start Icon".
  2. Select "Settings" 
  3. Select "System"
  4. Select "Power & Sleep"
  5. Related Settings. Press "Additional Power settings"
  6. Press "Choose what the power buttons do"
  7. If the items in "Shutdown Settings" are unavailable Press "Change settings that are currently unavailable"
  8. This will enable all the items in "Shutdown Settings"
  9. Disable "Turn on fast startup (recommended)"
  10. Save Changes

This process fix the problem and really Power Off the windows 10 system.