Function Key – Disable Action Keys mode.On modern DELL laptops, select “ Function Key Behavior” and press Enter to choose one of the following options: Once inside the BIOS/UEFI Setup, navigate to the Configuration Tab ( Advanced tab or System Configuration tab) and look for an option called “ Hotkey Mode” or “ Action Keys Mode“, set it to Disabled or Enabled.If you’re running Windows 10/8, you can access BIOS from Command Prompt, the Settings app or Windows sign-in screen. Turn on your computer, immediately and repeatedly press a specific key (F2, F12, DEL, F10, ESC, etc.) to enter into the BIOS Setup.Method 1: Disable or Enable Action Keys Mode from UEFI/BIOS If function keys or the Fn key don’t work as expected, then you need to disable or enable Action Keys (Hotkeys) mode on your Windows 10 / 8 / 7 laptop. If I accidentally activate the Action Keys (Hotkeys) mode, then F2 will lower volume and I have to press Fn + F2 for renaming files. On my laptop, the default function of F2 is to rename files, while pressing Fn + F2 will lower volume.

F2 key doesn’t rename file in Windows 10? Function keys for brightness control (F11, F12) do not work any longer? Most laptops have a Fn key on the keyboard which can change the behavior of function keys (F1 – F12).

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