I realize that this will be an unusual question, but here goes.
I have a laptop that is used in a community cinema to run a pre-movie powerpoint slideshow. The cinema is run by volunteers and few of them are technically capable, so I need the system to start predictably every time.
The problem with the laptop HDMI output is that it's not predictable, particularly under Windows 10. Sometimes it will start dual screen mirrored, sometimes extended desktop, sometimes using the laptop speakers, sometimes audio over HDMI. I'd like to be able to have the laptop permanently outputing in extended desktop mode with audio over HDMI even if the cable is disconnected.
Thx in advanced,