Hello, In earlier versions of windows (8.1, 8, 7, etc) you could run "displayswitch /external" from cmd or the run dialog, or press windows+p and select "second screen only" to turn off the monitor while still being able to use the machine with a screen reader. This was useful on laptops, where battery life and privacy are concerns. However, this feature seems to be unavailable in Windows 10 on a number of machines. For these systems, what is the best way to do this? Basically something like the "screen curtain" on Apple devices. Thanks, Bill