Function keys are the 12 set of programmable keys dedicated to serve an extra purpose which regular keys don’t, which can be very useful from time to time. Nowadays, especially Laptop manufacturers are combining these 12 sets of keys and Multimedia keys in one set of keys for less space consumption. Some of the users are running into trouble because their Function Keys are not working properly.
There may be a hardware fault or sometimes it is the keyboard software bug to blame for the problem.
But before going for the fixes make sure that there is no error with the keyboard itself. You can check your keyboard with another computer. If the keyboard is working fine except the Function Keys, here are some fixes which will solve your problem-
Table of Contents
Fix-1 Try pressing Fn/F Lock /F Mode Key
This is mainly seen on the new version of the multimedia keyboards where multimedia keys are combined with the function keys and both of the operations can be accessed by a single key. This is the cause of the error for almost every user. Follow these next steps to lock/unlock the Function keys-
1. Look if your computer has any keys that have Fn/ F Lock/ F Mode Key. Press that and press any function key. Look if that is working or not.
Or,
1. Press Fn/ F Lock/ F Mode Key for one time and release it. Then, try to use the Function keys.
If these methods didn’t work out, go for the next fix.
Fix- 2 Press F11 or F12 key
Sometimes pressing F11 or F12 can solve the problem with Function Keys. Try this fix for a few times and if it still not working out then go for the next fix.
Fix 3 – Turn off filter keys
1. Press Windows key + R key together to open run.
2. Now, type control in it and click OK.
‘3. Now, Click on Ease of Access .
4. Click on Ease of access center.
5. Now, Click on Ease of access center Settings.
6. Click on Make the keyboard easier to use option.
7. locate Filter Keys option.
8. Make sure Turn on Filter Keys is unchecked.
Fix -4 Update your keyboard driver
Corrupted or faulty software of the keyboard can be the cause of the fault. You can try to update your keyboard software with these steps-
1. At first, press ‘Windows Key+X‘ together from your keyboard.
2. Then, click on the “Device Manager“.
3. In the Device Manager window, look for the “Keyboards” section. Now, click on that section to expand it.
4. Now, from the drop-down select the driver. Right-click on it and click on “Update driver”.
5. You will see a prompt stating “How do you want to search for the drivers?“.
6. From the given options, choose “Search automatically for updated driver software“.
Wait till Windows searches for a compatible driver for your keyboard, downloads it and installs it.
Then, reboot your computer. Try the Function keys again and you will find them working.

Sambit is a Mechanical Engineer By qualification who loves to write about Windows 10 and solutions to weirdest possible problems.
mehra says
Hi.
After changing my OS, Win 10, I couldn’t work with fn+f11 and f12 and f10 keys. Other combination of fn works probably.