The keyboard does not print, how to turn it on. What to do if the buttons on the keyboard do not work. The keyboard stopped working due to the oxidation process

Keyboard - main tool for entering information, without which work on the computer is impossible. Most often, to this device it worked flawlessly, you just need to connect it to your computer, and it will install all the necessary drivers automatically. This happens in most cases, but not always. There are situations when, when you connect a keyboard to a USB or PS/2 connector, it is not detected on the computer and does not show any signs of operation - the indicators do not light up and the buttons do not work. In this article, we offer instructions on what to do if the keyboard on your computer does not work.

Connecting the keyboard to the computer is as simple as possible - just insert its wire into the corresponding connector on the motherboard, and after that the device will start working. There are wireless keyboards, the radio receiver of which is inserted into a USB connector, after which the device works if the distance between the transmitter and the device is maintained.

Due to the simplicity of the process of connecting a computer, we can conclude that there are only 2 reasons why the keyboard does not work on the computer:

• Mechanical. There may be problems with the keyboard itself or the wire that connects it to the motherboard. The cause of the malfunction may also be a broken connector on the motherboard.
• Software. Keyboard drivers are installed automatically, but during the installation process any software failures may occur and this situation not an exception. In addition, problems may occur not at the operating system level, but in the BIOS, where the appropriate settings for the keyboard are disabled.

Depending on which connector the keyboard is connected to the computer, we offer different options for solving problems that arise.

What to do if the keyboard does not work on the computer via USB protocol

The most common interface for connecting a keyboard to a computer is USB. The speed of information transfer from a peripheral device to the computer is sufficient, both via the USB 2.0 protocol and via USB 3.0, so there is no difference in which connector the keyboard is connected to.

If the USB keyboard does not work when you turn on the computer, you need to do the following:

It is worth noting that users whose keyboard is connected to the motherboard via USB may have problems entering the BIOS on the computer boot screen if using old version basic software. In this case, you need to find a keyboard with a PS/2 connector or use the appropriate adapter.

What to do if the keyboard does not work on your computer using the PS/2 protocol

Keyboard manufacturers are trying to move away from the PS/2 connector, abandoning it in favor of USB. It is very difficult to find a keyboard with a PS/2 connector on sale, but if you come across such peripherals and it does not work when loading Windows, most likely the problem is related to the drivers. To make the keyboard work, you need to do the following:

It is worth noting that a similar problem with keyboards connected via the PS/2 protocol most often occurs due to an error when installing the i8042prt.sys or kbdclass.sys driver.

There are many reasons why your keyboard may not work well or may not show any signs of life at all. First, you need to immediately determine the root cause of such a breakdown: software or hardware. Speaking in simple language- either the keyboard itself is faulty, or the problem lies in the Windows settings.

So, in order...

The keyboard works, but some keys do not work well (stick, do not respond to pressure, etc.).

The reason is usually simple - the keyboard is dirty.

You need to disassemble the keyboard and clean it. It doesn’t matter what kind of keyboard you have (usb, standard, wireless, built into the laptop). Turn the keyboard over and unscrew a few screws. Here you will see that under each button there is a rubber pad. Sometimes it happens that the lining breaks or “slips” out of place.- as a result, the corresponding key does not work. Then you just put everything in its place.

The key buttons can be wiped with anything, any cleaning agent. But it’s better not to touch the translucent film and everything else. By the way, so as not to get confused later about where each key should be, take a photo of your keyboard in advance. Of course, you can then find your keyboard model on the Internet and arrange the keys. But, still, it is much more convenient to take a photo of your keyboard. Some even number the keys in pencil to avoid confusion later. After “cleaning”, arrange the keys in their places, place the rubber pads (they can be placed in any order - they are all the same). The work is painstaking, but the result will be a perfectly working keyboard.

Plug problem

If you have a classic keyboard (with a round purple plug), then sometimes it happens that the small legs of the plug can bend.

In general, this type of connector is called PS/2. Purple is for the keyboard, green is for the mouse. If you forcefully try to insert the plug, the legs may bend. Then you need to take tweezers (or small pliers) and straighten all the legs.

USB keyboard

This is a regular keyboard, but it is connected not to the PS/2 connector, but to the USB connector.

If such a keyboard does not work when connected, then the problem most likely lies in the BIOS settings (SETUP). When you start the computer, press Del (or F6, everyone has different keys).

And since in bios settings If you can’t use a mouse, then a reasonable question arises: “How can I press Del at startup, and how will I configure the bios if my keyboard doesn’t work???!” The problem can be solved simply - go to your neighbor and ask him for a keyboard for 5 minutes :)

Wireless keyboard

I’ll ask you a stupid question: “Have you charged your keyboard?”
Surprisingly, the battery usually just runs out and people forget to recharge it.

And it also happens that Windows simply cannot install drivers for your wireless keyboard. Then search for drivers on the Internet manually.

Drivers

It happens that some new installed program unknowingly corrupts keyboard drivers. If you have Windows 7 installed, then driver problems should not bother you. The system itself installs and restores drivers. Usually, you just need to restart your computer.

But there are times when the driver has become corrupted, or the new driver does not work well. In such cases, you can proceed in two ways. First, restore the system to the day when the keyboard worked properly. Secondly, you can go to the device manager and update the drivers, or view their properties by looking at the diagnostics.

Keys don't work specific program or game

You should find the program or game settings and look at the key assignments. In general, study the settings. In games, as a rule, keys can be reassigned. And in programs, look at the list of hot keys.

Some other tips

If, when you turn on the computer, it makes three long beeps (beep, sound), this means that you have inserted the keyboard incorrectly. Simply pull out the plug and reinsert.

If the keyboard suddenly does not work, first of all, check it on other computers. If you only have one computer (usually everyone does), then go to your neighbor and check the keyboard on his computer.

Sometimes it happens that the mouse (computer) starts to work poorly - it jams and freezes. The mouse will constantly seem to be disconnecting and connecting (at the same time the computer will make sound signal about connecting the device). Due to the fact that the computer will constantly recheck the input devices connected to it, the keyboard will also begin to work poorly. Then just pull out the mouse and recheck the keyboard.

There are also cases when the mouse and keyboard cannot work at the same time. This happens EXTREMELY rarely, but it can happen. Somehow, some mouse models are simply incompatible with some keyboard models(?!). I personally encountered such a case only once. Usually you can fool the computer in this case. You need to find the mouse or keyboard in the registry and assign different names to them. Sometimes this helps... For the same reason, joysticks (gamepads) may sometimes not work in games. For example, the game allows you to use gamepads only from Microsoft, and the rest simply do not work. Then you need to find your gamepad in the registry and rename it to Microsoft.

If the keyboard does not work, and you still need to find something on the Internet (for example: drivers for the keyboard), then you can use the on-screen keyboard.

That's all. Ask questions - I will be happy to answer them.
Thank you for your attention!

Latest tips from the Computers & Internet section:

Council comments:

It turned out that the keyboard and mouse were incompatible. I switched the mouse to another port, all the letters on the keyboard worked. I suffered for a month

When you connect a USB mouse to a laptop - it works, add a USB keyboard - only the keyboard works, the mouse stops responding.

Hello. I can’t install Enable in the BIOS because it doesn’t exist there. There are only disable and ani kay. what to do? When rebooting, it creates 1 beep and the button goes out when it exits to the desktop. and the keyboard doesn't work.

Thank you! I received an answer, but the fact of the matter is that they didn’t give me any connectors for the USB, what is my solution!?

I bought a LOGITESH mouse and keyboard a long time ago without wires, only with a battery compartment, and since then it has been a dead weight and I don’t know what to do!?

Robert, the kit should include USB connectors. You insert them into the USB ports, and turn on the power on the keyboard and mouse (the switch is usually at the bottom). Then go to “Start” - “Control Panel” - “Hardware” - “Add a device”.

I can't find the answer; I bought a non-wired keyboard and mouse in a store without instructions, which only have compartments for Logitesh batteries without chips!? I DON'T KNOW how to use it!!! What to do!?

Another thing may be with the keyboard (I know from my own experience) sometimes the bolts are loose on the back and because of this not all the keys work) I tightened it up and everything is fine))

hit the keyboard a couple of times in the laptop the keys do not work: n, g, r, o, t, b what to do

I just bought a wireless keyboard for the Vivacase 10" tablet, universal for 10" for Android with a case, but some keys from the first row of letters QWER YUIOP T do not work, CAPS LOCK alternately... The keys are flat, but you can pick them up with a thin strip of cardboard... Can I “pick them out” and have a look? if it doesn't break... maybe it's nonsense. What could be the reason, how can I fix it myself?

When I turn on the computer, the keyboard starts working, and when I turn it on, the computer stupidly stops working. What should I do? Help me!!

On a laptop, the s, z, and space buttons sometimes stop working. Either they work or they don’t. The laptop is not flooded or dropped. What could cause such keyboard failures?

oh night, I really need help, I have Windows 7 Home Premium, we updated it to 10, but it didn’t work, we rolled back to 7 as indicated in the settings and the keyboard doesn’t work, when I try to enter the bios it shows a safe mode, safe with loading network drivers ,safe with support command line, Load log entry, enable low resolution video mode (640/480), last known known configuration, debug mode, disable automatic reboot on system failure, disable mandatory driver signature verification, normal Windows boot. When entering the first three modes, the keyboard still does not work, as I understand it, during the rollback there were problems with the keyboard drivers, how can I fix this if the disk drive of a laptop (Toshiba Satellite) does not work

I have to press several times until the action appears on the screen, but now I’m typing everything fine, and when I started the text I pressed the letters 5-6 times. how to fix this. costs 10

if the keyboard on the laptop does not work (partially) and screen keyboard is it working, can we assume that the keyboard controller is working (in other words, the on-screen keyboard uses the keyboard controller in its operation or not

While the stationary physical keyboard does not work, you can still type on the online keyboard ladonnik 5 (hybrida). It is similar to YTSUKEN, but more convenient. On it you can print both in Western European languages ​​and in Slavic and Asian (CIS) languages.

the keyboard is working, the old computer was broken (the video card was broken), I recently changed the video card, I turn on everything, but the keyboard does not work, all ports and the keyboard are working, to turn on the computer it says (press enter), as I understand it on the keyboard, but as if it shows no signs of life, although working?

On a computer, few will envy. And, as often happens, such troubles most often happen precisely when reports are being submitted, recruitment is being carried out during the battle for the fate of the world in the next computer game etc.

On the other hand, the question “why the keyboard doesn’t work on a computer” is not asked too often, since with the beginning of the “USB era” many “childhood diseases” in this area of ​​​​computing devices are a thing of the past. In light of this, a broken keyboard is a reason for a kind of pride in one’s “luck.”

Connection

In all modern keyboards to connect with motherboard The USB serial bus interface is used. It has a number of advantages over the discontinued PS\2 standard, among which we can especially note the possibility of “hot replacement”. That is, the user can theoretically, when the system unit is turned on, connect and disconnect the plug to the corresponding free connector. And many people take advantage of this, especially owners of portable computers. In such a case there are two negative points. Firstly, it was noticed that frequent switching of the device leads to the fact that the spring-loaded contacts in the plug lose their elasticity, resulting in poor performance (the power or data line disappears).

It is not surprising that this is followed by the question “why the keyboard on the computer does not work.” Thus, with frequent connection, the plug wears out and requires replacement. Secondly, sometimes when a device was hot-swapped, it failed, so this opportunity should not be abused. To check the contacts, you need to disconnect the keyboard plug and carefully reconnect it, gently shaking it in the connector. Sometimes it is possible to return the contacts with a needle to their previous spring-loaded state.

Electrical problems

Like any other USB device, the keyboard receives power directly from the port. And since the features of the internal implementation of the bus are such that several connectors are connected to one control chip at once, when powerful devices (with a current of 500 mA) are turned on, their functionality is not guaranteed. The solution is simple: if the question arises “why the keyboard does not work on the computer,” then you need to disable everything USB devices, except the most necessary ones, and check the functionality.

If there are a large number of simultaneously used USB peripherals, you need to use an intermediate splitter with an external source. Also, quite often the problem with USB is observed in old computers and laptops, the power supplies and other elements of which have exhausted their service life and do not produce the required voltages. The solution is similar to the above. And, of course, do not forget that the fault may be in the connector itself: to check, you need to connect the plug to another USB port.

Software glitch

Modern OS To interact with the keyboard, a driver control program is used. Sometimes it stops working correctly. As a result, the user cannot understand why the keyboard on the computer does not work. You need to use the mouse to go to the “Device Manager” and try to update the driver in the “Keyboards” item. If this does not help, then you need to remove the device using the appropriate command and reconnect the keyboard to the computer - the Plug&Play mechanism should work.

Settings incident

In modern BIOS motherboards There is an item that allows you to refuse to use USB by setting the Disable mode. If for some reason this happens, then you need to find an old PS/2 keyboard, use it to enter the BIOS (Del button immediately after turning on the power) and enable USB. Another option is to reset the settings to their initial state by closing the corresponding Clear CMOS jumper on the board (its exact location is indicated in the instructions). Beginners are sometimes faced with the fact that the keyboard on the right does not work. This can be caused by accidentally pressing the NumLock button, which switches the modes of the right numeric keypad. If the indicator of the same name is on, then you need to press the button again to switch it to another state.

Let's imagine a situation: you turned on the computer, it booted, but the keyboard does not work. And why the keyboard stopped working is not clear.

Agree, for many users this will cause confusion, and some will even decide to give keyboard for repair

It’s good if you have another old keyboard at hand, which you can use to check the general performance of the computer. But usually it doesn’t, so let’s try to figure out why the keyboard doesn’t work and what to do to make it work again.

The advice in the article is universal. It doesn't matter what brand your device is -a4tech, logitech, genius, oklick or any other - we will try to solve the problem.

6 reasons why the keyboard on your computer does not work

We will describe a few simple steps that may help you fix your keyboard:

1. The keyboard connector is disconnected from the computer.

Action one: Let's check if our keyboard is connected to the system unit.

This reason is the most trivial - the contact in the connection is broken system unit computer and keyboard. The keyboard connector is usually located on the rear panel of the computer system case. You can easily find it - its shape resembles a domestic standard tape connector.

To fix this problem, you just need to securely secure the keyboard cable connector in the mating connector on the computer system unit.

If necessary (for example, if the contact is unreliable), you can wipe the contacts on the keyboard connectors with alcohol.
Make sure the keyboard wire is not damaged.

Turn off the computer and disconnect and reconnect the keyboard.

You can check the functionality of the keyboard itself on another computer.

2. The keyboard is connected to the wrong connector

Action insecond: We look to see if we connected it to the mouse port by mistake, the ports for the mouse and PS-2 keyboard are located next to each other and differ only in color.

3. Checking the functionality of the PS/2 port

Action tretier: Let's look at the condition of the PS-2 keyboard port itself, and see if it's loose.

The functionality of the PS/2 port can be checked using another keyboard

4.Checking the functionality of the PS/2 connector

Act four the most common one, we look at the condition of the keyboard plug itself; it is often stepped on, inserted incorrectly, deformed and broken. If you were careless, you could bend the legs of the PS/2 keyboard connector.

The arrow shows where the thin antennae-contacts of the plug are located, which are the easiest to bend and break.

Just note that the connector itself usually purple :o).

If the legs of the connector are bent, straighten them with something thin, such as tweezers or a knitting needle.

5.Keyboard with USB interface

In order for a keyboard with a USB interface to work on some computers, you need to enable the corresponding option in the BIOS, it is called USB Keyboard Support, opposite this parameter can be Disabled you need to set the value Enabled, sometimes the settings in the BIOS disappear.

I understand that you don’t want to go into the BIOS, but it’s necessary. You need to go into the BIOS and check, maybe the USB controller itself is disabled and you will need to set it opposite USB Controller value Enabled.

In this case, only the PS-2 keyboard can help; by connecting it, you can make your own changes to the BIOS and switch, for example, the option USB Keyboard Support responsible for USB operation keyboard out of position Disabled to position Enabled only after this, saving your changes and rebooting, will you be able to work with the keyboard USB interface. Also pay attention to the parameter USB Controller Is it turned on?

Save settings and exit BIOS

Then you need to reinstall the drivers for the keyboard. In Device Manager, you need to remove the keyboard from the list of equipment and start searching for new hardware in the Control Panel

6. Drivers are not installed

Now there are a huge number of new multimedia keyboards with additional keys for which you need certain drivers, which should come with this keyboard.

If you purchased a keyboard that came with drivers, you need to find and install them, again after you remove the old drivers.

And, of course, if you are refused wireless keyboard need to check condition of batteries or accumulators.

All of these keyboard problems are typical. Now, let's look at special cases when the keyboard does not work.

• the keyboard is locked using a key (lock) on the system unit;
• The XT/AT switch on the back of the keyboard is not installed correctly;
• There is a hardware problem with the keyboard.

The keyboard is locked using a key (lock) on the system unit

To eliminate the possibility of unauthorized access to the computer, there is a special lock on the front panel of the system unit.

Using the key included with your computer, you can completely lock the keyboard. In this case, any presses on the keyboard keys will be ignored by the keyboard controller, and upon booting the computer will display a message stating that the keyboard is locked and needs to be unlocked:

It should be noted that using a keypad lock by itself is not sufficient protection against unauthorized access. For more information about sharing access to your computer, see the "How to protect the data you store on your computer" section.

The XT/AT switch on the keyboard is not set correctly

Most keyboards can be connected to both IBM PC/XT and IBM PC/AT computers. However, the keyboards of these computers work in various modes. For compatibility, there is a switch for selecting the computer type - XT/AT - on the bottom panel of the keyboard.

If you connect the keyboard to an IBM PC/XT computer, then this switch should be in the XT position, and if the keyboard is connected to an IBM PC/AT computer, then the switch should be in the AT position.

In the case where the switch is in incorrect position, the keyboard may not work.

Sticky keyboard keys

The reason is that Keyboard buttons don't work, also causing one of the keyboard keys to stick. Sticking of some keys can lead to unpredictable consequences. For example, if the Del key is stuck on the keyboard, the SETUP program will launch immediately after turning on the power.

After using your computer keyboard for a long time, it becomes dirty. As a result of this, individual keys on the keyboard may become stuck, that is, after pressing and releasing a key, the contacts of the key remain closed. Since the contacts remain closed, the keyboard controller turns on the auto-repeat mode, as if you had not released the key.

The result of such sticking can be the auto-generation of a stuck key symbol and an overflow of the keyboard buffer. For example, if the "q" key is stuck and you are working with a text editor, then a very long string"qqqqqqqqqqqqqqqqq...", which, in addition, will grow at a catastrophic speed.

1. Check to see if one or more keys on your keyboard are jammed.
2. Try pressing all the keys in a row.
3. After using the computer for a long time, contamination occurs; to get rid of dirt, you need to carefully disassemble the keyboard, clean it of debris and wipe the contacts with alcohol; only this is a very tedious task, remember that disassembling the keyboard is much easier than assembling it.
4. Try disconnecting the keyboard from the system unit for a short time and connect it again.

To protect the keyboard from contamination, you can use a special cover that covers the keyboard from above and protects the keyboard from dust. Typically, these keyboard covers are sold along with the keyboard.

PS. It happens that the keyboard is blocked by a virus. An unlikely event, if there is such a suspicion, check your computer with an antivirus using a computer mouse

The keyboard could simply be faulty. Don’t be lazy, try connecting it to another computer, will it work :o).

Based on materials from remontcompa.ru, lib.csu.ru

Keyboard malfunction issues computer It’s easier to decide - there’s always an opportunity check the keyboard you are using on another computer or vice versa - connect it to your PC exactly working properly. Then act according to the circumstances.

WITH laptop Another situation is that the keyboard is built-in, that is, an integral part.

In any case, try first reboot device and go to BIOS(usually the key F2 at the time of initialization for laptops, Del or F10 for desktop PCs). It didn’t work out - there’s a high probability device malfunction, most likely you will have to contact service center. Before that we recommend check the contacts - they may be oxidized or squeezed out(relevant for PS/2) or check cable integrity- perhaps he received damage(for example, it was pinched).

If you succeeded, then the keyboard OK, we are dealing with a software glitch.

In this case, boot the system, it would be better to do this in safe mode without starting drivers ( F8 while loading). The device is functioning, which means the problem is in the drivers. Launch the OS in normal mode, right-click on the icon Computer – Properties.

Find a section Keyboards and delete everything that is in the subkey.

Then reboot computer and check if the keyboard works. In normal condition, the driver should install automatically. Here in Dispatcher you can update or reinstall driver - this option is suitable if there is an indication of unidentified devices with yellow exclamation point.

The next option is system rollback to the restore point to the date when the keyboard was exactly working.

To do this we go Start/ Control Panel

Run the program here Recovery.

Launch system recovery– choose point, to which you should rollback.

A more radical way would be complete reinstallation operating system.

Enters characters when non-working keyboard possible using on-screen application.

Start/ Special abilities .

By clicking the cursor on the image of the virtual keys, information will be entered.

This is a temporary measure will simplify finding and solving the problem. For a laptop, another temporary solution would be connection ordinary USB keyboards to any free port.

For more advanced users, of course you can disassemble And check connection cable. We will not dwell on this in detail in this article.

The numbers on the right don't work

If only the numbers on the right do not work, first check if the Num Lock, some users may forget to turn it on.

Above is usually Num Lock mode enabled illuminated green LED turned on (in rare cases it may not be present).

If the numbers still do not print, check to see if the Num Lock button actually does this. Sometimes this mode includes a combination Num Lock + SHIFT or another.

Also check if you have the option enabled mouse control from keyboard.

Start\ Control Panel\ Special abilities\ Mouse

There should be no check mark on the “ Keyboard control«.

The f1-f12 keys do not work

If we are talking about laptop owners, the key is responsible for turning on the function keys Fn.

Some types of PC office devices have a " Office", you need to check its operation. In other cases it should help reinstallation drivers.