Sometimes drivers with different versions can cause such problems. Try updating your BIOS and chipset drivers and see if it makes any difference.If you have created one then restore your system in the previous state by going in the system restore settings. The best practice in such cases is to create a System Restore Point before installing the software.
They may look differently depending on the brand of laptop you own. This key can be different for different models of laptops. Here, we will list the most common solutions to fix the problem. Unlike many other issues, the backlight issue of not working on your computer can be composed of several different reasons but not all of them might not be applicable in your case.
Popular fixes for Backlight not Working in Windows
