![]() For part of Notebook models, backlit function key is F3 and F4 key. Here you can learn more about ASUS keyboard hotkeys introduction. The ATK Hotkey drivers run as a background service in Windows when the computer boots up. The ATK Hotkey Utility is the driver program that allows the function (“F” or “Fn”) keys, also known as hotkeys, on the keyboard of an ASUS or Lenovo laptop to work correctly with the operating system and other installed software. ![]() Restart your PC for the change to take effect.Right-click on it and Repair on the context menu.Find and locate program “ATK Package” from the list.Go to Control Panel -> Programs and Features.Uninstalling it will disable the “Fn” key and all of the secondary functions. If so, the ATK Package is one thing you probably want to keep. Pressing the FN+F4 keys continuously increases the brightness of the keyboard backlight while pressing the FN+F3 keys continuously decreases the brightness and ultimately disables the backlight. If they are available, they can enable the backlit by pressing FN and F4 keys (FN+F4 keys) at the same time.
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