why wont my laptop mouse pad work

Short for Function,
Fn is a key found on most laptop keyboards and some desktop computer keyboards to perform special functions, such as turning up the screen s and adjusting speaker volume. As you can see in the image above, this laptop has an Fn key with a green and blue Fn. Keys with symbols of the same color indicate that their secondary function will be activated by pressing that key with the Fn key. In this example, pressing and holding down the Fn key, along with the up or down arrows, would adjust the laptop screen brightness. The Fn key should not be confused with the found on computer keyboards. Where is the Fn key found on the keyboard? On laptop computers, the Fn key is almost always located on the bottom left-hand side of the keyboard, next to the. Not all have an Fn key. For those that do have an Fn key, it is often found near the. On full-sized desktop computer keyboards, the fn key is found to the right of the, as shown in the picture to the right. Most other full-sized desktop computers do not have an Fn key. For those desktop computer keyboards that do have an Fn key, it is often found around the spacebar. How do I use the Fn key? With most computer keyboards, the Fn key is used like other (e. g. , the Shift key).


By pressing and holding the Fn key in conjunction with another key that has an Fn function, that function is performed. For example, consider the photo above of the F12 key on an Apple keyboard. This key also has an icon of a speaker, making the F12 key also an audio volume control key. If you press this key, it will adjust the volume of your speakers. But if you hold down the Fn key when you press this key, it will be interpreted as the F12 key. Holding down Fn changes from the default key action to the alternate. You can configure which action is the default, and which action is the alternate, in the keyboard section of your System Settings. On desktop computer keyboards with an Fn key that lights up when enabled, you need to make sure the key is enabled (illuminated) before pressing the corresponding function key. Once the key is illuminated it no longer needs to be pressed, and each function is performed until the fn key is disabled. Not all Fn keys are color coded. For computers with a white or black Fn key, it still performs the same function and can be pressed in combination with other keys that have pictures on them.


For example, pressing the Fn key and a key with a sun on it should adjust the brightness. Pressing the Fn key and a key with a crescent moon should put the computer to sleep. What functions can the Fn key perform? The functions available to the Fn key all depend on the computer manufacturer and the type of keyboard. Below is a list of some of the common functions this key can be used to perform. Turn up and down brightness on the display. Turn up and down the volume. Mute the volume. Control media functions such as play, pause, fast forward, and rewind. Switch between windows. What if my keyboard does not have an Fn key? If your computer did not include a keyboard with the Fn key, it has no alternate functions on those keys. You may consider upgrading your keyboard to a different model, such as a. Why does the Fn key not work? For the Fn key and the function key to work it must be supported by the computer and device. For example, if you are pressing the Fn key and the brightness key to increase the brightness it only works on the laptop screen and not an external monitor connected to a laptop. The same goes for special functions such as opening a browser window, printer, and audio controls.


On desktop computer keyboards with an Fn key that lights up when enabled, you need to make sure the key is enabled (illuminated) before pressing the corresponding function key. If you are trying to use an Fn key to perform a function that has worked in the past (e. g. , adjusting your sound volume) and it is no longer working there may be a problem with either the or the actual hardware in the computer. , Here are some troubleshooting steps that may help in resolving the issue. - Do a hard reset first, remove the battery and AC adapter then press and hold the power button for 20 seconds then check weather the touchpad will work again after the reboot. - If this will not work connect an external mouse and see if it will work and if will work uninstall/reinstall the TouchPad driver from Device Manager. - Uninstall it from Device Manager and reboot the laptop and that should reinstall the driver automatically. - If this will not work there's a shortcut key to enable or disable the touchpad. Try fn + F11. - If all these will not work do run a complete factory reset.

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