This laptop has worked fine for a long time. Recently it does not turn off display after non activity. I checked Power options, and have turn off display after 5 min inactivity. It does not turn off display. I have tried going to different power option, but nothing I select and accept change for seems to work. This has worked for several years. I have rebooted etc, but no power option has worked to turn off the display.
Any thoughts or suggestions are welcome.