How do I know if my F4 key is working?

Check to See If Fn Lock Is Active
Start by looking for the Fn key on your keyboard. It may be near the bottom left of your keyboard, and near the Windows key. It may also be near the bottom right of your keyboard near the ALT GR button. Press it once and then see if your “ALT F4” function has been restored.
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How do I get my F4 button to work?

To get to the normal operation of a particular function key, look for a key labeled something like FN (short for "function") or F Lock (for "function lock"). Press or hold down that key (it varies from system to system) as you press the F4 key, and it should work as you expect.
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Why is F4 key not working?

Turn off Sticky Keys

Go to Ease of Access. Scroll down and open the Keyboard tab from the left pane. Scroll down and click toggle the switch to turn off Use Sticky Keys. Close the Settings window and then check if the Alt F4 key combo is working.
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How do I activate Alt F4?

Alt + F4 works on Windows 10 and all other Windows editions. To use this command, press the Alt key and the F4 key at the same time. Alternatively, press and hold the Alt key, then, while still holding down the Alt key, press the F4 key.
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How do I know if my function key is working?

On your keyboard, look for an Fn, F lock, or F Mode key. Depending on your laptop, you should press for one time or press and hold for a few seconds. If this didn't work, press the Fn and Esc keys at the same time. Then, try to use one of the Function keys.
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How to Disable Hotkeys | How to Enable Function Keys



How do I activate F keys?

To enable FN Lock on the All in One Media Keyboard, press the FN key, and the Caps Lock key at the same time. To disable FN Lock, press the FN key, and the Caps Lock key at the same time again.
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How do I lock and unlock the Fn key?

If the function lock key is present on your keyboard, simply press the key and the Fn key to lock Fn keys. To unlock Fn lock, repeat the action again. The Fn lock key is represented by a lock symbol and located under the Esc (Escape) key on most standard keyboards. Although some keyboards don't have the Fn key at all.
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How do I enable F4 on my laptop?

Laptop keyboards are smaller than stationary ones so typically, the F-keys (like F4) are used for something else. This is easily fixed! Just hold down the Fn key before you press F4 and it'll work.
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How do I fix Alt F4 not working?

What to do if Alt + F4 isn't working on a Windows 10 PC?
  1. Fix 1: Restart Your Computer. ...
  2. Fix 2: Use the Fn Key. ...
  3. Fix 3: Update and Reboot Your Computer. ...
  4. Fix 4: Check the Keyboard Driver. ...
  5. Fix 5: Disable Sticky Keys. ...
  6. Fix 6: Troubleshoot Your Keyboard. ...
  7. Fix 7: Tweak Your Windows Registry Settings. ...
  8. Fix 8: Replace Your Keyboard.
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How do I get F4 to work on my HP laptop?

How to use the F4 key. Open the program that uses the key and press F4 . If the F4 key also has an icon on the key, it indicates the key has a secondary function. To use the secondary function, press and hold down the Fn key, and while continuing to hold the key, press F4 .
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How do I press F4 on my Dell laptop?

On Dell laptops you can hold the Fn key and press the Esc key that makes it work like a Caps lock and it toggles the function keys so that you can use F4 without pressing the Fn key but use the Fn key for the other function (eg. in your case muting the sound).
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How do I use F4 without Fn?

Method 1. Toggle the Fn Lock key

Pressing this along with the Fn key itself will change your top row from hotkey functionality to Fn keys in an instant, allowing you to perform actions without having to hold the Fn key as well. This key is usually the Esc key or a completely separate key.
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Why is my function key not working?

If the function keys are not working, the problem may be you have a function lock or F-Lock key that needs to be toggled. The F-Lock key is used to turn on or off the F keys ( F1 through F12 ) or secondary functions of the F keys. Some keyboards may label the F-Lock key as the Fn key.
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Why are F4 and f5 keys not working?

Sometimes the function keys on your keyboard could be locked by the F lock key. As a result, you can't use function keys. Check if there was any key like F Lock or F Mode key on your keyboard. If there is one key like that, press that key and then check if the Fn keys could work.
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How do I turn on the F keys on my HP laptop?

Press fn and the left shift key at the same time to enable fn (function) mode. When the fn key light is on, you must press the fn key and a function key to activate the default action.
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Where is the F-Lock key?

On most keyboards, the "F-Lock" key is found above the 10-key number pad, directly above the "Num Lock" key. The key says "F-Lock" and sometimes has an "F" below it with a black square around it.
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What key locks your keyboard?

To lock your keyboard, press Ctrl+Alt+L. The Keyboard Locker icon changes to indicate that the keyboard is locked.
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What happens when you press the F4 key?

F4 is a predefined keyboard shortcut in Excel that repeats your last command or action.
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What is F4 key on laptop?

F4. Open the address bar in the Internet Explorer and the Windows Explorer. Alt+F4 closes program window currently active in the Microsoft Windows. Ctrl+F4 closes the tab in the active window or open window in Microsoft Windows. F5.
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What is the light on my F4 key?

1. The Mute Button For many dell computers, Fn+F4 toggles muting the mic. If you have a light on that key (or whichever key has a blue mic with an X icon), hold Fn and tap F4. If the light stays on, your computer has Fn lock enabled, so simply hit F4 instead.
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How do I unmute my f4 key on my Dell laptop?

To unmute or mute your microphone, press Windows logo key+F4.
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Why are my f keys not working Dell laptop?

Method 1: Press Fn + Esc on your keyboard

This method is very simple. Just press Fn + Esc on your keyboard. It has worked for some Dell laptop users.
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How do I turn on function keys on my Dell laptop?

The Function Lock is enabled/disabled by pressing the Escape key (on the top row next to the F1 to F12 keys) and Function key (on the bottom row next to the Windows button) together like a toggle switch.
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