Hi Suraj,Were you able to use this feature before? If so, have you installed or updated anything recently on your PC? You can check if it is a Drivers issue by running a free drivers scan for graphics drivers using one of the download links in the article above.
hp 6735s drivers vista download
Download Zip: https://tlniurl.com/2tLOkH
Same video display driver is not working which i used one year back. I reinstall my hp laptop n installed those drivers i kept already in my pendrive. But this time it shows like installing but nothing happened. I can not change the brightness which is a big problem for me. I downloaded latesr chipset n intel hd display driver from hp official website n installed those. But nothing happened. Its really harassing :'( 076b4e4f54