Where to Find Fn Key Settings on Your Lenovo

On most Lenovo laptops running Windows 10, the Fn key settings live in the BIOS or UEFI firmware—the low-level software that runs before Windows starts. You reach this menu by restarting your computer and pressing a specific key during startup, usually F2 or Del, depending on your Lenovo model. The exact key appears briefly on your screen as the computer boots; watch for text that says "Press F2 to enter Setup" or similar.

Some newer Lenovo models also offer Fn key controls through the Lenovo Vantage app, which runs inside Windows itself. This is the easier route if your laptop has it. You can check whether Vantage is installed by searching for "Lenovo Vantage" in your Windows Start menu. If it is not there, you can read it free from the Microsoft Store.

Key Takeaways

  • Lenovo Fn key settings are usually in BIOS or UEFI, accessed by restarting and pressing F2 or Del during startup.
  • Newer Lenovo models may have Fn controls in the Lenovo Vantage app, which is faster and does not require a restart.
  • The most common change is swapping Fn and F1–F12 so the function keys work as F1–F12 by default without holding Fn.
  • After changing BIOS settings, save your changes before exiting, or the changes will not take effect.
  • If you cannot find the Fn setting in BIOS, your model may not support changing it, or the setting may be under a different name like "Action Keys Mode".

Changing Fn Settings Through Lenovo Vantage (Fastest Method)

Open Lenovo Vantage and look for a section called System Settings, Device Settings, or Keyboard—the exact name varies by model. Inside, you should see an option for "Fn Key Behavior" or "Function Key Behavior." Click or tap it to reveal two choices: one that makes F1–F12 the default (so you press them without Fn), and one that makes the special functions (volume, brightness, etc.) the default (so you hold Fn to use F1–F12).

Select whichever mode you prefer and close the app. The change takes effect when ready—no restart needed. This is why Vantage is the easiest path if your laptop has it. If you do not see a keyboard or Fn option in Vantage, your model does not offer this control through the app, and you will need to use BIOS instead.

Accessing BIOS to Change Fn Key Settings

Shut down your Lenovo completely. Press the power button to turn it back on, and when ready begin pressing F2 repeatedly (about once per second) until a blue or black screen appears with white text. This is the BIOS menu. If F2 does not work, restart again and try Del instead. Some models use different keys; if neither works, check your Lenovo model number and search the Lenovo support website for "[your model] BIOS key."

Once you are in BIOS, use the arrow keys on your keyboard to navigate. Do not use your mouse—BIOS does not respond to it. Look for a tab or menu called Config, System Configuration, or Advanced. Inside, search for an option labeled Fn Key Behavior, Action Keys Mode, or Function Key. The exact wording depends on your model year and Lenovo line (ThinkPad, IdeaPad, Yoga, etc.).

Choosing Your Fn Key Mode in BIOS

When you find the Fn setting, you will see two or three options. Standard or F1–F12 mode makes the function keys (F1 through F12) work as their primary action without holding Fn—useful if you use keyboard shortcuts in software. Special or Multimedia mode makes the special functions (volume up, brightness down, etc.) work without Fn—useful if you adjust these settings often.

Highlight your choice using the arrow keys and press Enter. The setting is now selected but not yet saved. Navigate to the bottom of the menu and look for a button or option that says Save and Exit or Exit Saving Changes. Press Enter on it. Your laptop will restart, and the new Fn setting will be active when Windows loads.

What to Do If You Cannot Find the Fn Setting

If you have searched the entire BIOS menu and found no Fn option, your Lenovo model may not support changing this setting in firmware. This is common on budget or ultraportable models. In that case, you have two workarounds: use keyboard remapping software like SharpKeys (free, from Microsoft Store) to reassign keys in Windows, or contact Lenovo support with your exact model number to confirm whether the setting exists.

To find your exact model number, right-click the Windows Start button, select System, and look for "Model" in the window that opens. It will show something like "ThinkPad E15" or "IdeaPad 5." Write this down before contacting support, as it determines which BIOS version and settings your laptop has.

Common Mistakes to Avoid

The most frequent error is exiting BIOS without saving. If you change the Fn setting and then press Escape or select "Exit Without Saving," the change disappears and your laptop restarts with the old setting still active. Always navigate to "Save and Exit" explicitly before leaving BIOS.

Another mistake is pressing the wrong key during startup. If you press F2 too late (after Windows has already started loading), you will just open a search or file dialog instead of BIOS. Watch the screen carefully during the first few seconds after pressing the power button, and begin pressing F2 as soon as you see the Lenovo logo or any startup text.

Finally, do not change any other BIOS settings unless you are certain what they do. The Fn key setting is safe to modify, but other options can prevent your laptop from starting or connecting to the internet if set incorrectly. Stick to the Fn option and leave everything else alone.

Frequently Asked Questions

Will changing Fn settings affect my keyboard in Windows?

No. The Fn setting only controls whether the function keys or special functions are the default action. Windows will still recognize all keys normally. If you use software that requires F1–F12, setting Fn to Standard mode just means you do not have to hold Fn while pressing them.

Can I undo a Fn key change if I do not like it?

Yes. Go back into BIOS the same way (restart, press F2 or Del), find the Fn setting, select the other option, and save and exit again. The change takes effect when ready after restart. There is no risk of breaking anything by switching back and forth.

What if I forget which Fn mode I set?

Restart and enter BIOS again. Navigate to the Fn setting and look at which option is currently selected (it will be highlighted or marked with an asterisk). That is your current mode. If you want to know what each mode does, the BIOS menu usually shows a brief description next to the setting.

Does Lenovo Vantage work on all Windows 10 Lenovo laptops?

Vantage is available on most newer Lenovo models (roughly 2016 and later), but not all. Older or budget models may not have it in the Microsoft Store. If you cannot find it, BIOS is your only option. Lenovo also released an older app called "Lenovo Settings" on some models; if you see that instead of Vantage, it may have Fn controls too.

Is it safe to change BIOS settings?

Changing the Fn key setting is completely safe. It is a straightforward toggle with no risk of damaging your laptop. However, do not change any other BIOS settings unless you know exactly what they do, as some can prevent your computer from starting.