Click the Apple menu and select “System Preferences” to open it, click the “Keyboard” icon, and then click the “Use all F1, F2, etc.

On Mac OS X, this option can be found in the System Preferences window. keys as standard function keys” under the Keyboard tab. For example, if you’re using Windows in a Boot Camp configuration on a Mac, you can open the Boot Camp configuration panel from your system tray and you’ll find this option named “Use all F1, F2, etc. You may also see this option in various places throughout Windows. For example, we found this option under Advanced > Function Key Behavior on one modern Dell laptop. Look for an option that controls this feature and you can change it.

(If you built your own PC, look in the motherboard’s manual.) If you’re not sure how to access this screen, perform a web search for the model of PC you have and “Access BIOS” or “access UEFI.” You could also just look in the PC’s manual. Reboot the computer and press whatever key it asks you to press while it’s booting up to access this screen - often F2, Delete, or F10 - or use the new method to access UEFI firmware on Windows 8 and 10. Many laptops that ship with built-in keyboards often have an option for this in their BIOS or UEFI setup screen. For example, on Microsoft’s Surface keyboards, you can toggle Fn Lock by holding the Fn Key and pressing Caps Lock.Ĭhange an Option in the BIOS or UEFI Settings Some keyboards may use other combinations for Fn Lock. It functions as a toggle just like Caps Lock does. To disable it, we’d hold Fn and press Esc again. To enable it, we’d hold Fn and press the Esc key. For example, on the keyboard below, the Fn Lock key appears as a secondary action on the Esc key. If you don’t, you may have to press the Fn key and then press an “Fn Lock” key to activate it. Toggle the Fn Lock on and the keys will function as if you’re holding down the Fn key all the time, just as the Caps Lock key makes your letter keys function as if you’re holding down the Shift key all the time.ĭepending on your keyboard, you may actually have a dedicated “Fn Lock” key. This can often be toggled with an “Fn Lock” key, which functions like a Caps Lock key.

Asus function key guide