I am having trouble with my Dell Inspiron 3542.
When laptop is plugged in, the brightness keys works fine but when system is running on battery, the brightness changes to 100% and brightness keys stops working, the brightness widget pops up and shows that brightness is being increased or decreased but no actual change in screen brightness takes place. I am running windows 10 and Intel HD Graphics driver version 20.19.15.4531
I recently got my screen display replaced as it had started malfunctioning. Could that be the reason for my troublers? Please help. Thanks.