if it was black screen, it might just be the monitor..
It would not come back on. So I turned the power off. It took several tries before I got the HP symbol. I don't know why.
Anyway it's ok now. Thank goodness. I do have dilapidated old dinosaur for a backup-but that would be desperate.
Happened to the wife’s. Grabbed the closest flat screen and plugged computer to it. Works great!