when connected to hdmi port of laptop with win 10 display not working

when connected to hdmi port of laptop display is not working,not detecting as 2nd display.hope some error ,tried roll back of display driver ,nothing happend, in a critical stage pls help if anybody solved this issue

Hi there, please take a picture of your setup. thanks.


I don’t know what display you are using, so I will just try to help with general info… I have had problems with displays in the past not seeming to work, and what I found in my case was that the display adapter was set to a resolution that the display did not support. I changed the resolution setting to one that the display supported and it started working perfectly. Maybe this is the same problem you are having, maybe not. Without more info, I can’t guess at your problem. I hope that this is helpful.