The FN function keys give you a faster and easier way to control some hardware features. Using FN keys, you can adjust the screen brightness, speaker volume or turn on and off aircraft mode, and many other functions.
But sometimes these keys stop working and now you have to open Action Center or Settings whenever you need to adjust the computer settings. If this happens to you, the following tutorial of quantrimang.com will help you fix the problem.
1. Make sure the FN keys are not locked
In almost any case, the FN keys stop working due to someone accidentally pressing the key Fn Lock. Key Fn Lock also affects other keys like Caps lock or Num Lockso it is easy to find whether the FN keys are locked.
On the keyboard, find the key Fn, f lock or F Mode. Depending on the laptop being used, you will need to press once or press and hold for a few seconds. If this is not effective, press the keys FN and ESC At the same time.
Then try using one of the function keys.
2. Check the keyboard
If some FN keys are still active, it may be a sign that it is necessary to clean the keyboard. If not regular hygiene, the keyboard can stick to dust and hinder the active keys as usual. If you have enough knowledge, you can clean your own laptop, as long as there are suitable tools.
Also, if you have connected the separate keyboard to the computer, try the following quick fixes:
- Disconnect and reconnect the keyboard.
- For Bluetooth keyboard, remove the battery, wait a few minutes and reconnect.
- Connect the keyboard to another computer and check if the FN keys are active.
3.
On the older versions of Windows, you may have accessed the troubleshooting process Hardware and Device Through Control Panel. This is how you can do that:
Step 1: In the search bar of the Start menu, enter Command Prompt and choose the most suitable result.
Step 2: Enter:
msdt.exe -id DeviceDiagnostic
Step 3: Press the button Enter.
Step 4: This operation will display the troubleshooting process Hardware and Device. On this window, click Next to start the process of troubleshooting.

4.
If the problem is troubleshooting Hardware and Devices Not enough to fix the problem and make the FN keys work again, there is another Windows tool that you can use. This time, you can access it through Settings.
Step 1: Open Settings and come Update & Security.
Step 2: From the left, choose Troubleshoot.
Step 3: Click Additional Troubleshooters.
Step 4: From Find and fix other problemclick on Keyboard> Run The Troubleshooter.

5. Turn off Filter Keys feature
In Windows, the Filter Keys feature is designed to stop the repeated key operations. However, disabling the keys can have a positive impact on the function of the FN keys.
Step 1: Open Control Panel.
Step 2: Go View by and choose Large icons and small icons.
Step 3: Click Ease of Access Center.
Step 4: From the list Explore all settingschoose Make the keyboard Easier to use.
Step 5: Go to the part Make it Easier to Type and uncheck the option Turn on Filter Keys.
Step 6: Click Apply> ok To save new changes.

6. Update the keyboard driver
It is likely that FN keys stop working due to outdated drivers, broken or problems. In this case, updating the keyboard driver will fix the problem. Refer to part 4: Fix the keyboard error that does not work on Windows 10 to know how to detail how to do it.
If you want to download the keyboard driver from the manufacturer's website, make sure you choose the right driver for the Windows version and the processor type. If not, it will lead to more problems.

Above is a list of quick and easy solutions to overcome the status of function keys that do not work in Windows 10.
Wish you successful troubleshooting!