Error State or Incorrect Boot Condition: If the system was unable to boot properly and fails to go through all the pre-boot checks then the system may cause the keyboard backlight not working error.Updates to certain software can also make the previous drivers incompatible. Corrupt or Incorrect Drivers: Sometimes the drivers can get corrupted after a Windows update.Well, there are many reasons that can cause the ASUS laptop keyboard light not working error and some of them are: The Potential Causes of Why ASUS Laptop Keyboard Backlight Not Workingīefore moving forward and start following the solutions, let’s learn about the possible reasons behind ASUS laptop keyboard backlight not working on Windows 10 first.