In the last day or two our HP laptop has this thing where you turn it on, Windows starts, you enter your pin, it sits and thinks for a while, and then the screen (and attached second LG monitor) go completely blank. You can still see the mouse and move it around over both screens but they're black apart from that. We try various things and it seems to come back after a minute, or maybe not. Starting up without the monitor attached might help, or might be coincidence. It might also be connected with an update to Windows that happened two days ago.

Wondering if anyone has anything similar ?