Fn key not working on Samsung PC

Pressing the Fn key turns the Function Keys into hotkeys (or shortcuts) for a number of system functions. For instance, Fn + F2 will darken your screen and Fn + F3 will brighten it. If the keys are not responding as expected, they can be easily fixed by adjusting the settings or checking for available updates.

Fn key not working on Samsung PC

Clean the keyboard.

Use a soft, non-abrasive, lint-free cloth to clean the surface of the keyboard. When using this dry cleaning method, you do not need to unplug or detach anything on a Galaxy Book.

To deep clean using a cloth or a can of compressed air, first shut down the PC and disconnect all cables and power sources. If your PC has a detachable keyboard, remove it before cleaning. Then wipe down the keyboard with a damp microfiber cloth, or use compressed air to clean in between the keys. Do not directly apply liquid cleaners to the device and do not use household cleaners.

Note

If the screen gets wet, make sure it is completely dry before using it.

Install the proper Settings app for your device.

Some models require the proper Settings app to be installed in order for the Fn hotkeys to work correctly. These apps are available through the Microsoft Store. Open the Start menu, begin typing Microsoft Store, and then select it when it appears.

You'll want to get the version that matches your device. Versions which don't match your device will show that they cannot be installed on your device.

Samsung Settings: Used for most notebooks running Windows 10 and 11.
Samsung Settings 1.1: Used on other notebooks running Windows 10 and 11.
Book Settings: Used on some Galaxy Book models.

Check for driver updates on Samsung Update.

Navigate to and open the Samsung Update app to check for updates.

Windows Update window with Check for updates button

Check for Windows updates.

Select Start, and then select Settings. Select Update & Security or Windows Update, and then check for updates.

Restart the PC.

After installing new updates, restart your PC. Right-click Start, select Shut down or sign out, and then select Restart.

Request service.

If the Fn keys still do not work, visit our Support Center to request service.

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