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Keys on laptop keyboard do not work

Check for obvious reasons that might be causing the problem

But before you start disassembling and cleaning the keyboard, first make sure that the reason why a few buttons stopped working is not due to your inattention or other obvious things. For example, if the laptop does not respond to pressing numbers, check that you did not accidentally touch the Num Lock, which is responsible for disabling this unit. Some laptop models support a combination of Fn and Num Lock.

Sometimes problems with devices can be software problems. For example, the driver responsible for its functioning can be damaged due to the influence of a virus. The first step in this case is to scan the system with a regular anti-virus, or it can be one of the specialized utilities, for example, the free Virus Removal Tool from Kaspersky Lab. Then reinstall the required drivers.

Removing the buttons and cleaning the keyboard

To remove the key without damaging the device, you usually need to press it slightly at the top, and pry it at the bottom with a thin screwdriver. It all depends on the laptop model. The buttons are attached here to latches to the so-called. elevator.

keys, laptop, keyboard, work

The number of mounts can be from three to four. In the first case, only one connection will be mobile. upper or lower, in the latter. both connections will be mobile. We are primarily interested in the fixed connection of the elevator. It is from this side that you will need to pry it off if you want to safely snap it off. Most often, fixed connections are located at the bottom. Then just pull the tool up.

After dismantling all the buttons, you can proceed directly to cleaning. You can work with simple wet wipes. You can also use various cleaning fluids, with the exception of aggressive ones. acetone, etc., which can easily damage the circuit. After removing all dirt, reassemble the device. this must be done in reverse order.

There will also be no particular difficulties with the installation:

  • lower the key pad onto the spring-loaded element in the center;
  • push it straight down vertically until it clicks.

This procedure is then repeated with each of the buttons.

The device will start working normally if accumulated debris was the cause of the malfunction. Failure to do so is likely to be due to defective board tracks. You can also do their repair yourself, if the damage is not very extensive.

Recovering tracks on the keyboard board

In the case of faulty tracks, the device will have to be disassembled completely. It will be necessary to repeat all the actions described, and then dismantle the elevators. They are shown in the photo below.

With the last action, difficulties should not arise, since they are removed quite simply, especially from the stationary side.

After all the elevators have been removed from the data input device, it will be possible to dismantle part of the data input device from the aluminum substrate.

The polyethylene board with tracks is also removed. On older laptops, you will also need to dismantle the plastic edging. Before this, it is advisable to heat the part with an ordinary hair dryer. Subsequently, during the assembly phase, regular superglue can be used to secure the plastic and restore the fasteners.

Next, we will work with a polyLenovo board, on which the tracks are drawn. The problem is that the track board includes two plates, so in order to start repairing, these layers also need to be disconnected:

  • Usually they are connected in several places by spot gluing, so if some places coincide with the tracks, then when trying to disconnect, they can also break. Proceed gently, heating the bonding area with a hairdryer, and then separating the layers from each other with a clerical knife.
  • If in some place you find the remnants of a spilled liquid or other stains, rinse and dry the disassembled device thoroughly.
  • Examine the tracks carefully for damage. Usually, all defects are visible just upon close examination, but you can also work as a tester and “ring out” suspicious areas.
  • After detecting defective tracks, due to which some elements of the input device did not work, they need to be redrawn. For this, it is not necessary to use special fluids and materials. an ordinary car kit for repairing rear window heating threads is also suitable.

New paths are drawn right on top of the rotten ones, but the entire area will need to be thoroughly cleaned of dirt before that. After the renewed track has dried, it will definitely need to “ring”. The polyethylene part can be collected no earlier than an hour and a half after carrying out the described actions.
Next, the repaired layer is laid on an aluminum substrate, and on top. a part with spring-loaded elements. You can check its performance right now by connecting it to a PC and opening, for example, a regular notepad. If everything works fine, continue assembling the device, not forgetting to turn off the laptop before doing this.

If the laptop keyboard was flooded

If, as a result of negligence, the keyboard of the device has been flooded, it is important to quickly de-energize the device, remove the battery and clean and dry, having previously disconnected the input device. If you neglect cleaning, then over time, some of the tracks can rot, as a result of which you will have to make rather difficult repairs. one or several buttons may simply stop working.

Consider how to disassemble a laptop for cleaning in the case described above:

  • De-energize it and remove the battery.
  • Dismantle the data input device, for which:
  • from above with a thin screwdriver, move the extreme latch and lift its edge; slightly lifting the edge of the input device, press the next latch with a screwdriver, do the same with all the others (there should be five or six latches);
  • after all latches are disengaged along with the input device, carefully lift the latter and disconnect the ribbon cable that connects it to the system board.
  • After dismantling, you can start removing the keys themselves. Please note, when disconnecting the cable, it is necessary to hold the latter only by the plastic connector. Doing this, taking the conductors, is strictly prohibited, since in this case there is a great risk of damage to any contact. Also, when assembling a laptop after cleaning, you can accidentally break the cable or even connect it upside down. In all these cases, the laptop will no longer work normally.

Restoring laptop buttons

A common reason some laptop buttons stop working is due to damaged paths on the device’s keyboard board or a significant amount of debris accumulating. Below we will tell you what to do in this case. how to disassemble the laptop for cleaning, restore damaged tracks and eliminate others, including software reasons why the above malfunction may occur.

Temporarily replacing the physical keyboard

To be able to download an antivirus program on the Web and perform some other elementary operations on a laptop without a physical keyboard, you can use a virtual one. You can activate it through “Start”:

  • in this menu, select the section of accessibility;
  • click on the line “On-screen keyboard”.
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To enter the desired characters, just click on them with the mouse. Starting with the eighth version of Windows, instead of the standard screen one, you can use a special touchscreen gadget for a laptop or tablet. It also works without a touch screen. clicks are also made with the mouse.

Activation takes place as follows:

  • call the context menu of the taskbar (bottom bar of the screen) by clicking the mouse;
  • select “Properties” from the menu;
  • in the properties of the taskbar, open the “Toolbar”;
  • check the “Touch keyboard” option and click “Apply”.

Entering any characters with the mouse can then be done after calling the touch analog from the system tray.

Now that at least the virtual keyboard is working, you can download the necessary drivers from the manufacturer’s website and remove the faulty driver in the device manager. If you are having difficulty finding the program you need, you can download one of the free so-called. driverpacks with a huge database of fresh drivers. You can use products such as DriverPack Solution or Slim Drivers. they will carry out all the necessary updates automatically.

Enabling the F1-F12 keys on a laptop

As a rule, on all laptops, the row of F-keys is configured for two modes: functional and multimedia. Previously, a simple single press performed the default action assigned to that key within a program, game, or operating system (for example, F1 opened the application’s help). Pressing the F-key together with Fn already performed a different action assigned to it by the manufacturer. It could have been a volume mute or something else.

However, more and more often in modern devices, you can find the opposite principle of operation: the usual press on the F-key launches the action assigned by the manufacturer, and the combination (take the same example with F1) Fn F1 opens the help window.

For users who use F1-F12 for functional purposes more often than for secondary multimedia purposes, such a change of order is often not to their liking. It is especially inconvenient for fans of computer games who require a quick reaction to actions. Fortunately, changing the priority of work can be very simple. by editing one of the BIOS parameters.

  • Start the BIOS using the key responsible for entering your laptop model. If this is a function key, you do not need to press Fn. until the operating system is loaded, this row works in the usual mode.
  • Using the arrows on your keyboard, open the “System Configuration” section and find the “Action Keys Mode” parameter. Press Enter on it and select the value “Disabled”.

For Dell laptops, the setting will be different: “Advanced” “Function Key Behavior”. Here you need to rearrange the value to “Function Key”.

For Toshiba: “Advanced” “Function Keys Mode (without pressing Fn first)” “Standard F1-F12 mode”.

  • The new mode of operation of the keys is disabled, it remains to press F10, save the settings to “Yes” and reboot.
  • After changing the mode, you will be able to use F1-F12 without any problems as before. To use additional functions such as adjusting the volume, brightness, enabling / disabling Wi-Fi, you will need to simultaneously press the corresponding function key together with Fn.

    From this short article, you learned why the function keys in games, programs and Windows might not work in your laptop, as well as the way to enable them. If you have any questions, use the comment form below.

    Solution 2.

    Many users have reported that simply pressing the F11 or F12 key fixes the problem that all function keys do not work. Try pressing F11 or F12, then test the rest of the function keys.

    Update function key drivers

    If the function key drivers are not compatible with your operating system, they may not work either. Thus, make sure you have the latest drivers for the function keys installed.

    Open your laptop manufacturer’s website, go to the Driver Download Center and download drivers for your keyboard. Install new drivers, then restart your computer and test the f1 f12 keys.

    The F1 F12 keys on the keyboard do not work

    If you find that your f1 f12 keys are not working on your keyboard, the first thing to do is stop panicking. This is a fairly common problem and can be solved very easily.

    In this article, we will show you how to fix the function keys (this is the name of the keys from F1 to F12).

    Recall: the f1 f12 keys on a laptop keyboard work when the fn key combination is pressed at the same time, the required f1 f12 key. On a desktop computer, you do not need to press the fn key for one of the f1 f12 keys to work.

    Solution 1.

    First, take a look at your keyboard. Many keyboards have a separate key labeled F Lock or F Mode. This key is designed to lock the function keys due to which the f1 f12 keys on the keyboard do not work.

    If you have one of these keys, then press it to make the function keys work again.

    Install BIOS Update Driver

    Please note: installing BIOS Update Driver may carry a small risk for your computer, so it is better to seek professional help.

    If your keyboard f1 f12 keys don’t work, you can try installing BIOS updates. To do this, you need to download the BIOS Update driver from your laptop manufacturer’s website. We will take an HP laptop as an example.

    When the download is complete, double-click the downloaded.exe file to install the driver.

    Restart your laptop for the changes to take effect and check if the f1 f12 keys work.

    That’s all! We have considered the most popular solutions to the problem when the f1 f12 keys on the keyboard do not work.

    Lost contact

    Make sure the keyboard cable is fully inserted. It is enough to pull it out a couple of millimeters, and the contact will be broken. And this sometimes happens during cleaning or if there are animals in the house that like to play with wires.

    If you have a PS / 2 keyboard, carefully inspect the connector and make sure the pins are not bent. This happens if installed incorrectly and results in malfunction. In this case, straighten the pins with tweezers and try connecting the keyboard again.

    Lack of power

    If your keyboard has a power button, make sure it is turned on.

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    Viruses

    Also, Windows users will not hurt to check the system for malware. To do this, scan it with an antivirus. If not installed, download it from the internet using a spare physical or on-screen keyboard.

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    Disabled USB support in BIOS

    The keyboard may not work due to a feature disabled in the BIOS if you have a new computer or have replaced an old device with a new one with a PS / 2 connector. Go to BIOS, go to Advanced and make sure Legacy USB Support or USB Keyboard Support is Enabled. If it is disabled, change the value and press F10 to save the settings and restart the computer.

    Port disruption

    It is also worth trying to connect a keyboard without an adapter, or, conversely, use it. The USB keyboard may not work when connected via a PS / 2 adapter. The same is possible when connecting older keyboards via the USB port.

    Why all the keys on the laptop do not work

    Now let’s look at the reasons why the keys on the laptop do not work, they do not respond in any way to pressing, the indicators do not light up.

    Software glitch.
    A common reason is a driver crashed. If restarting the laptop did not help, and the laptop keyboard still does not work, then you need to reinstall the driver.
    Another no less frequent reason is viral infection.

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    Oxidation of loop contacts.
    To check this option, you will have to disassemble the device and carefully examine the loop contacts, if the reason is in it, then a replacement will be required. In this case, we advise you to entrust the repair of the laptop keyboard to the service center masters.

    Failure of the microcircuit.
    As a rule, the microcircuit burns out after ingress of moisture, over time, the contacts oxidize, and the keyboard stops working.
    If liquid does get on the “keyboard”, immediately disconnect the laptop from the power supply, try to remove moisture from the surface as much as possible. Unfortunately, flooding can affect the operation of not only the keys, but the entire device as a whole, so take the laptop to professionals right away so that you don’t have to buy a new one.

    Mechanical impact. blow, fall.
    Since a laptop is a collection of elements interconnected, one awkward action can lead to a series of problems that somehow affect the performance of the device.

    Why keys do not work on a laptop

    Keyboard. one of the main parts of both a computer and a laptop. In this article, we will try to find out why the keys on the laptop do not work or a separate part of it does not work, and also consider the options for self-repairing the breakdown. But do not forget, urgent computer assistance in the service will always be much more effective than home repair.
    Laptop keyboard not working

    Before proceeding with the repair and disassembly of the laptop, we strongly recommend that you conduct a thorough diagnosis in order not to perform unnecessary actions and unnecessary manipulations with parts.

    At the initial stage, specify the degree of damage:
    1. all the keys of the laptop do not work;
    2. some keys do not work;
    3. some keys stick;
    4. the right block with numbers does not work;
    5.the keyboard does not react at all, there is no backlight and no indicators are on.

    Some of the listed breakdowns (2, 3, 4 from the list) are very easy to fix yourself and you do not need to resort to opening the keyboard, while in the first and last case, a complete analysis is required, which, of course, is not recommended to do with your own hands, but it is better to call a computer masters, so as not to aggravate the malfunction, and special equipment is used to reanimate the “Claudia”.

    Why some keys do not work on a laptop

    Let’s take a closer look at the malfunctions and understand the reasons.

    The right block with numbers does not work.
    Most often, “breakdown” has nothing to do with the failure of any elements. Probably, in the process of work you just pressed the “Num Lock” button. It blocks the keys, there is a special indicator for it, which is most often indicated by the number 1, if it is lit, then the numbers are active, and vice versa.

    Keys are sticky.
    The most common reason. large accumulation of dust and debris.
    The problem is not difficult to fix. It is necessary to carefully remove all the “excess” with a thin screwdriver, then clean, remove the dirt, and then gently insert into place.

    Some keys do not work. Doesn’t respond to taps or displays the wrong characters.
    If there is no dust or dirt, and the keys still do not work, then the problem is more serious.
    The tracks on the keyboard board may be damaged. Most likely, it will be difficult to fix the malfunction on your own, since you will have to disassemble the keyboard. Usually, upon a detailed examination of the board, you can see problem areas, but we also advise the tester to “ring out” suspicious parts, or better all the elements.

    Further, the “bad” paths will need to be redrawn over the damaged ones. Beforehand, it is necessary to thoroughly clean it from dirt. New tracks are usually made with conductive glue. After drying, repeated “ringing” is required. After completing all the steps, we assemble the keyboard. We do not recommend doing this procedure yourself.!

    If the keyboard has partially stopped working, and you really urgently need to write something, then you can always resort to using the virtual keyboard, which can be called through “Start-All Programs-Standard-Accessibility”, well, or temporarily connect a USB or wireless computer keyboard via a free USB connector.

    Laptop keyboard repair or replacement

    If you still did not manage to identify the reasons for the incorrect operation or complete lack of keyboard response yourself, then, in order to avoid poor-quality repairs and interference with laptop components, contact the service center for computer help, where professional masters will quickly and inexpensively return the keyboard, and at the same time that’s all. device to work.

    What to do if the keyboard does not work on a laptop

    The good thing about an ordinary computer in this regard is a quick change from one keyboard to another. Unfortunately, in a laptop, such a procedure cannot be done so quickly.

    In general, it is extremely rare for the keyboard to stop working for no reason. Most often, the user guesses what the reason is (and sometimes keeps quiet). For example, quite often the keyboard is flooded with tea, water, juice; mechanical damage, etc.

    This article will discuss the main causes of keyboard failure and what you can do to restore your device to working condition. So.

    The keyboard on the laptop refused: reasons

    What can be done to fix the situation temporarily

    I want to start the article with what temporary measures can be taken in order to somehow type some characters, press the necessary keys (which may be needed during the recovery process).

    • – connect a USB keyboard. So that any modern laptop has several USB ports. By the way, if the USB ports also do not work, then this is a rather bad sign, it may indicate a failed mat. fee;
    • – call the on-screen keyboard. It is located in the section: Control Panel / Accessibility / Ease of Access Center (see screenshot below).

    1) Inattention / ignorance of the user

    No matter how funny it sounds, but very often the keyboard “does not work” due to the ignorance of the user.

    For example, how many times have they complained to me that the numbers on the keyboard are broken, that no dates are entered, etc but the fact is that the numeric keypad works when the Num Luck key is pressed (by the way, there is often an LED on it or above it).

    So, if this key is not pressed, when you try to enter numbers from the numeric keypad, your cursor will jump, move, and not react at all.

    If numbers don’t work for you, be sure to pay attention to this key.!

    Note: some laptop models enable the numeric keypad only by pressing the key combination: Fn Num Lock.

    By the way, one more point: concerns the function keys (F1, F2, F, 3. F12). On modern laptops, for any of these keys to work, you need to press the FN key in addition to it. Usually, this moment is configured in the BIOS.

    The screenshot below shows the “Advanced” section of a Dell laptop. in the “Function Key Behavior” item, you can choose how the function keys will work:

    • in the mode of multimedia buttons (turn down / turn up the volume, brightness, etc.);
    • or in the mode of normal functions (update the page, call up help, etc.).

    Dell laptop BIOS. selection of key operation mode

    2) Garbage under / between keys

    Dust, dirt, crumbs are very fond of accumulating under the keys of the keyboard, and in general, over time, it becomes greasy from greasy hands, fingers, even among rather neat users.

    Because of this, some of the keys (usually, everything starts with one or two) ceases to respond normally, they have to be pressed and pressed with force.

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    There are three ways to clean the keyboard (in my opinion):

    • use special A USB vacuum cleaner that can gently and gently pick up most of the crumbs from the keyboard surface (see screen below);
    • use special Velcro, which, when pressed, fill the plane of the keyboard, and when you unhook them, all dust and dirt remains on them;
    • you can blow out the keyboard with a regular vacuum cleaner (especially if it has a reverse mode), and then gently wipe it with a damp cloth moistened with soapy water.

    3) Software glitch, error while loading OS

    If not a single key on your keyboard works at all (and you did not fill it in, did not knock, etc.), then I hasten to assure you that in more than half of the cases, the software is to blame. For example, a driver conflict could have occurred, at the stage of loading your OS, or some kind of virus was picked up, etc.

    The easiest and surest way is to try restarting your laptop first. It will not be superfluous to enter the BIOS and check how the keyboard works in it.

    Note: if your keyboard works in the BIOS (and the fact that you entered it already speaks about it), then you probably have a reason in the software.

    In case of problems with hardware, the keyboard will not work anywhere: neither in the BIOS, nor in Windows, nor in any other OS!

    If, after restarting the laptop, the keyboard does not work again (and the keyboard did work in the BIOS), try rolling the system back to the state when everything was in order. Below is a link to an article on restoring Windows (note: a rollback can be done using a bootable USB flash drive without booting the main system).

    If recovery does not help (or you have no recovery checkpoints), you can try reinstalling your system. I also recommend paying attention to the drivers, about them a little below.

    Generally, keyboard drivers are usually installed automatically during Windows installation. But sometimes the following problems are observed with them:

    • Some laptops have a somewhat non-standard keyboard with additional. functions. and for its full-fledged work, specials are needed. driver. If they are absent, the keyboard may not work in full mode;
    • There may have been a driver crash / conflict in the system. This often happens with USB drivers, TV tuners, audio drivers, etc.;
    • The keyboard drivers themselves may have been damaged.
    • Open Device Manager: press the WinR button combination, type devmgmt.msc and press Enter.
    • Next, pay attention to the “Keyboards” tab: open it. There should not be any exclamation marks opposite your device, and in general they should not be with other devices, ideally (indicating a problem with the driver). An example of what the problem device looks like. ;
    • To update the keyboard driver, right-click on the “Standard PS / 2 keyboard” device (or on the “keyboard” that will be in the “Keyboards” section), then select “Update drivers.”, And agree to the automatic installation (example below on the screen).

    5) Acidification of the keyboard loop contacts, damage to the loop

    If the previous steps did not help, and the laptop keyboard also does not respond to any of your pressings, I recommend checking the flex cable. The following usually happens to him:

    • if you disassembled the laptop and disconnected / connected the keyboard, it is quite possible that the cable could simply not be inserted tightly into the socket. If this was the case, try reconnecting the keyboard;
    • it is also often damaged when the laptop is not carefully disassembled (the wiring in the cable is thin enough and can be interrupted with one not careful movement);
    • the contacts of the loop, or the socket in which it “sits”, could oxidize over time and not give good contact. Try to gently wipe them with an eraser (as a rule, the contacts even on the eye begin to become lighter, which means you have removed the oxidized plaque).

    On modern laptop models, it is far from easy to remove the keyboard: for this, most often you need to disassemble the entire device to the ground!

    On older models. usually, it is enough to unfasten several latches with a screwdriver (as in the photo above), and raise the plane of the keyboard.

    By the way, if your laptop is under warranty, use the service center. Your independent disassembly (including disconnecting only the keyboard) will almost certainly cause a refusal of warranty service!

    6) Filling the keyboard with liquid

    Some experts have summed up interesting statistics: every 50th circle above the laptop falls over on it. First of all, it is the keyboard that suffers.

    By the way, from my own experience, I will say that with any flooding, the keyboard suffers 100%, but the rest of the devices (under it) still have chances to stay dry: it all depends on the user’s reaction speed after the incident, the device configuration and the amount of liquid spilled.

    Particularly dangerous for iron is the liquid that contains salt or sugar: tea, juice, lemonade, etc. When such a mixture gets on the contacts and metal parts of the boards, the process of oxidation and corrosion begins, which destroys (in some cases, not immediately, but right) iron.

    • turn off the laptop: you need to immediately disconnect the power supply and remove the battery as soon as possible (the faster the better);
    • then turn the device over so that liquid begins to flow out of it;
    • dry the device for several days (before, the device simply did not dry out). Do not use hair dryers, heaters, or other similar devices to dry;
    • it is highly advisable to disassemble the device and see how far the liquid has penetrated. In general, of course, if you have never done this yourself, I recommend showing the device in the service center: t. even if your device works after drying, the remaining liquid (especially if it was aggressive: juice, beer, tea, etc.) will slowly and surely destroy your iron from the inside, causing corrosion and oxidation.

    7) Mechanical damage

    In general, by and large, there is nothing to break in the keyboard, and as a rule, the breakdown is associated with damage to a specific key (i.e. 1-2 keys will stop pressing).

    Usually, this happens if something falls on the laptop keyboard, or you accidentally hit the device (this, for example, could be on the road when moving the device).

    In some cases, when the contacts on the keyboard board are damaged (or the button is “clamped”), the keyboard may not respond to pressing other keys and behave unstable.

    By the way, if you have any key pressed, you can find out if you open any text editor: Word, notepad, etc.

    As a solution: if 1-2 keys do not work for you, then you can reassign them to others and use the keyboard for some time (or maybe this time will be long ?!).

    To reassign buttons. I recommend using the special. utilities: MapKeyboard, Key Remapper, etc.

    8) What about the laptop battery?

    And the last thing I would like to dwell on in this article.

    In general, this is quite rare, but still I met on one “no name” Chinese laptop: the keyboard on it stopped working if the battery was discharged below a certain minimum of 7%, apparently a kind of software was working (I hope this software will not become popular?).

    I recommend doing the following: turn off the laptop and remove the battery, then connect it to the power supply unit. turn it on and check if the keyboard starts working.

    HSIDG.COM 2021