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What do the Function Keys do on a Dell Laptop Between the ctrl and Windows key on the lower left-hand corner of your laptop keyboard resides the function (Fn) key. It is displayed as Fn on the key itself. Some of you may think this key does nothing. What do the Function Keys do on a Dell Laptop The reason for this is that the Fn key works in a specific way. It is a modifier key that is used on most laptop models to activate secondary or special functions of other keys. The keys that work in conjunction with the Fn key will usually have a blue symbol or blue word displayed (the Dell laptop model XPS 13 9350 symbols are white). What do the Function Keys do on a Dell Laptop Some of the more useful Fn key combinations for a variety of Dell modeled laptops that we use as loaners are listed below. Keep in mind that many other keyboard models use very similar combinations, including desktop PCs. Latitude 3340, 7370, 7480, & E7450 Fn + F1:Mute/unmute the volume Fn + F2:Decrease the volume Fn + F3: Increase the volume Fn + F9:Search Windows Fn + F11:Decrease the screen brightness Fn + F12:Increase the screen brightness Fn + PrtScr:Toggle WiFi on/off Fn + M:0 Fn + J:1 Fn + K:2 Fn + L:3 Fn + U:4 Fn + I:5 Fn + O:6 Fn + 7:7 Fn + 8:8 Fn + 9:9 Fn + 0:* Fn + ? Latitude E7440 Fn + F10:Rewind audio and video Fn + F11:Play/pause audio and video Fn + F12:Fast forward audio and video Fn + End:Print Screen; this will also bring up SnagIt if the program is installed on the computer Fn + M:0 Fn + J:1 Fn + K:2 Fn + L:3 Fn + U:4 Fn + I:5 Fn + O:6 Fn + 7:7 Fn + 8:8 Fn + 9:9 Fn + 0:* Fn + ? /:+ Fn + up arrow: Increase screen brightness Fn + down arrow: Decrease screen brightness. So What do the Function Keys do on a Dell Laptop? XPS 13 9350 Fn + F1:Mute/unmute the volume Fn + F2:Decrease the volume Fn + F3:Increase the volume Fn + F4:Rewind audio and video Fn + F5:Play/pause audio and video Fn + F6:Fast forward audio and video Fn + F9:Windows search Fn + F11:Decrease screen brightness Fn + F12:Increase screen brightness Fn + PrtScr: Toggle WiFi On/Off. FN Key... disable/enable?? I just purchased and received a new Inspiron laptop. I've found several posts on here about the FN key, but none seem to be addressing the simplest of issues, which is how do you make the F1-12 keys default to the F1-12 key as opposed to the "hotkey" function that is assigned to it. An industry-specific software that I use utilized the F1-12 keys in almost every function, and I can't seriously have to keep hitting Fn+F4 every time. Function keys on Dell laptops require Fn+F1-F12 (default is multimedia/OEM key In most dell laptops (e. g. Studio 1555, Inspiron 1545, Inspiron 3000, Inspiron N5010, etc) the F1-F12 keys at the top of the keyboard are dual function with Multimedia/OEM keys such as volume and screen brightness, etc. The problem is, is that the Multimedia/OEM keys are the default, and you have to press the Fn key to get the F1-F12 key to work. To find out What do the Function Keys do on a Dell Laptop. For example, this means you have to hit Alt+Fn+F4 to close a window, instead of the regular Alt+F4. This is annoying. Is there a way to reverse the default functions of the F1-F12 keys in Windows? Ideally, this is possible without some kind of third-party hotkey manager. On Dell laptops, there is no dedicated key to turn off the Function key. Press the Escape and Function keys together as a Function Lock key. The Function Lock option can be configured by booting into UEFI. This article provides instructions on how to disable the function key on a Dell laptop. How Do I Lock and Unlock the Fn Key? Dell laptop keyboards with a Function key give you two sets of commands. You can use the top row as multimedia keys to toggle different PC settings or use them as standard function keys (F1–F12). But they cannot do both at the same time. If you want to use the F1-F12 keys for their secondary functions of controlling multimedia or your screen settings, use the steps here to disable them on the laptop. The behavior of the Functions keys can be controlled by the Function Lock (Fn Lock) found under BIOS or UEFI settings. How Do I Disable the Fn Key? There is no dedicated Fn Lock key on most Dell laptops to disable the F1 to F12 Function keys. 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. As you can see, on the Dell XPS 13, the Esc key has a tiny lock icon to indicate the Fn Lock. When Function Lock is on, you don’t have to hold down the Function key to trigger the action. What do the Function Keys do on a Dell Laptop? The Function keys (F1 to F12) have standard functions associated with them. For instance, press the F5 key in Chrome, and a webpage will refresh and reload. Increasing the playback volume could be the secondary function of the F5 key, as indicated by a small icon below the F5 label. Conclusion Enabling Fn Lock allows you to execute any standard functions tied to the F1 through F12 keys without pressing the Function key always. Toggle off the Function Lock, and the F1-F12 keys will be disabled. For instance, press F5 now to increase the volume of the media playback. When Fn Lock is disabled, you must press the Function key to use the F1 to F12 keys for their standard function. For instance, press the Fn key + F5 to refresh the Chrome page. I hope you will get the idea of What do the Function Keys do on a Dell Laptop. 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