The keyboard blinks but does not work. Why does the computer keyboard stop working? The keyboard does not work on a new computer

There are few people to cheer you up on the computer. And, as often happens, such inconsistencies are most often extinguished as soon as the creation of the world “burns”, the hour of battle for a share of the world in the world ends computer graphics ta in.

On the other hand, the power supply “why the keyboard on the computer does not work” does not need to be asked often, since the fragments of the “USB server” have lost a lot of “children’s ailments” in these galusa computing devices in the past. A slight breakdown of the keyboard is a reason for one’s pride in one’s “luck.”

Connection

All current keyboards for connecting with motherboard The interface of the serial USB bus. Before being released from the PS2 standard, there are a number of advantages, among which the ability to hot-swappable can be especially important. So, theoretically, when the system unit is turned on, you can connect and disconnect the plug from the mains power socket. And there are a lot of people who are cheating, especially the owners of portable computing machines. This has two negative aspects. First of all, it was noted that frequent switching of the device leads to the fact that the spring contacts in the plug lose their spring, as a result of which efficiency is destroyed (the life line of both data is known).

It’s not surprising that this is followed by the question “why the keyboard on your computer doesn’t work.” Thus, if it is connected frequently, the plug will wear out and require replacement. Otherwise, when hot replacing the device, it went wrong, so there is no trace of the possibility of evil. To check the contacts, you need to unplug the keyboard plug and carefully reconnect it, lightly snatching it in the socket. Otherwise, the contacts can be turned with their heads into the spring pin.

Electrical problems

Like any other USB device, the keyboard lives directly in the middle of the port. And some of the peculiarities of the internal implementation of the bus are such that up to one ceramic microcircuit is connected to a series of connectors, then when pressure devices are turned on (with a 500 mA source) Its effectiveness is not guaranteed. The solution is simple: if the power goes out, “why is the keyboard not working on your computer,” you need to turn everything on I'll attach a USB, in addition to the most necessary, and check the practicality.

If there is a large number of USB peripherals being used at one time, it is necessary to remove the intermediate connector from the external device. Also, the problem with USB often occurs in older computers and laptops, power units and other elements have exhausted their resources and do not see proper voltage. The solution is similar to the one predicted. And, of course, it is not good to forget about the fact that the malfunction may be in the socket itself: to check it is necessary to connect the plug to another USB port.

Software crash

Today's operating systems interact with the keyboard using a driver program that controls it. Sometimes the wine stops working correctly. As a result, the user cannot understand why the keyboard on the computer does not work. For help, you need to go to the “Device Manager” and try to update the driver under the “Keyboards” item. If this does not help, you need to remove the device using the appropriate command and reconnect the keyboard to the computer - the Plug&Play mechanism must be activated.

The incident is cleared up

Current BIOS motherboards have an item that allows you to access the USB port by setting the Disable mode. For whatever reason this happened, you need to find an old PS/2 keyboard, then go into the BIOS (Del button after powering up) and enable USB. Another option is to throw the adjustment into the cob mill by closing the Clear CMOS jumper on the board (the exact adjustment is indicated in the instructions). Beginners sometimes struggle with the fact that the keyboard does not work right-handed. This can be done by pressing the NumLock button, which switches the modes of the right numeric block. If the same indicator lights up, you need to press the button again to switch to another mode.

The standard keyboard does not require special settings to work in Windows 7: to start using it, simply connect it to your PC. However, as with any devices, there are also problems with keyboards. Most often it is tsepovna or chastkova vidmova, and also the work is incorrect. In addition, some computer users find it difficult to learn how to use the keyboard and want to change it.

We have prepared a tutorial on how to independently troubleshoot keyboard problems and how to adjust them for manual “use” in Windows 7.

The most common types of keyboard problems and methods for solving them

• The keyboard doesn't work.
• Windows 7 does not recognize the keyboard.
• The keyboard works, but while typing the wrong characters are being typed.
• The keyboard does not respond to pressing the adjacent buttons.
• The system does not recognize the received keys.

The keyboard does not work, is not recognized by the system, the light indicators do not light up

This problem indicates that the device is not connected to the power supply or is faulty. To turn off the first reason:

• connect the keyboard to the rear of a working USB or PS/2 port of the computer without adapters and other “intermediate” devices (connections to PS/2 can only be made if life is connected to the system unit);
• Check your connection reliability.

Since the keyboard still does not show the “life” sign, it is likely that the keyboard itself is faulty or the cable is damaged.

A similar design of a dartless keyboard can indicate the discharge or the presence of life elements.

The keyboard does not work on and off in Windows. Before installing the system, as well as on other computers, it works

The keyboard is working fine, but is not functioning as a result of a system failure. The reasons may be:

• driver problems;
• I’ll add blocking software;
• virus infection;
• change the registry and corrupt system files.

The problem with Vinyl was not immediately after Windows installations 7 (the keyboard on this computer worked normally before), try uninstalling the driver:

• open the control panel -> Device Manager;

• find the keyboard in the list, open it context not menu Then select “Visibility”.

• restart your computer.

These steps will help Windows 7 re-recognize device connections and reinstall them.

Other problems with Windows 7 and programs that were connected to the keyboard can be removed system updates. To go to Start, open All Programs ->> Accessories ->> Services and click “System Update”.

Select a valid control point that was created before the date of failure.

Confirm your intention by pressing the Done button.

Wait for the update to be completed. All changes, which include installation, software adjustment, registry adjustment, installation Windows update 7, etc. will be clicked, and those who blocked the keyboard will stop working.

If there is a possible cause of a virus infection, scan the system.

Windows 7 does not "bump" the keyboard. Vaughn is identified as an unknown device

This is often the case with non-standard keyboards, which cause problems with the drivers. You can solve the problem by installing the required driver from the disk that came with the keyboard upon purchase or from the manufacturer's website.

The standard Microsoft keyboard driver can be downloaded.

Buttons do not press or other symbols interfere

Most often, this is the result of a clogged keyboard or a mess in it. You can clean the device from debris and other debris that accumulates under the keys using a special vacuum cleaner or a spray can in tight areas.

If the keyboard does not work after it has worn out, it needs to be taken out, washed and dried.

As a similar problem occurs when any keyboard is connected to the computer, the problem may be caused by the port (PS/2 or USB) or the motherboard.

The functionality of the other keys can be checked using additional test tools, such as MS Key, which can be used before typing software security Microsoft IntelliType or online services Key-test, Keyboard Tester and the like.

Do not operate next to the keys

The reason for this is often third-party software for using the keyboard. Moreover, it is not obligatory that the addition works in your system; it is possible that it was there before and was incorrectly displayed. Sometimes it solves the problem incorrect setup such programs

To check this version, launch Windows 7 safe mode(Programs in the list of Automotive will not start under it). If the keyboard works normally, the release is correct.

Adjusting keyboard parameters in Windows 7

Setting up layouts

In the notification area on the task panel, press the My Enter button and you will see the layout you need.

Or press on the specified key. If you don't know anything, open the panel Windows management 7 ->> “Mova and regional standards”.

On the “Move and keyboards” tab you can select “Change keyboard”. Click the button.

The “Keyboard switching” section shows the corresponding keys that change the layout settings.

Adjusting the delay before entering characters, the speed of entering and the frequency of blinking of the cursor

Open the “Keyboard” program on the keyboard panel.

Parameters for entering characters in Windows 7 are located on the Width tab. Changing your habits, find the optimal setup for you. You can check how this works in the special input field of the same window.

Here, below, you can adjust the frequency of the momentary cursor under the hour of entering the text. You can also change the rotation of the step from right to left.

The keyboard is the main method of entering information on a computer. Therefore, it is practically impossible to use a computer without a working keyboard. Now we will look at the main reasons why the keyboard on a computer may not work and perhaps how to fix it.

Reason #1. Problems with connections.

If your computer does not have a keyboard, the first thing you need to check is its connections. You can close your account frequently or completely turn off your computer. To check this option, turn off the keyboard, connect it again and turn it over as you do.

Most current keyboards connect to an additional one, but if you have an inexpensive or old keyboard, you can connect to an additional PS/2. Make sure that the keyboard is connected to the purple PS/2 connector and that the connector on the keyboard side is not damaged. On the right, this rose consists of several dozen thin contacts and because they will be bent, the keyboard cannot be processed.

It is also necessary to look around yourself as you go from the keyboard to the computer. Your creatures could be harmed, or they could simply fray.

Reason #2. The batteries are low.

I don't like you dartless keyboard, then you definitely need to check the batteries. To do this, simply replace the batteries with new ones and turn over the keyboard.

You also need to check the connections to the USB port of the receiver that is responsible for picking up the signal from the keyboard.

Reason #3. Vimkneno Num Lock.

If the main part of the keyboard is working, but the buttons on the secondary numeric keypad are not working, you will need to turn on Num Lock. To do this, simply press the Num Lock key located above the numeric keypad, then turn it over to see how the numeric keys work.

When you press Num Lock over the numeric keypad, the light will come on, indicating that Num Lock is pressed. With this digital keyboard I can earn money.

Reason #4. Driver problems.

In some cases, some USB ports may not work unless installed on the motherboard. If you connected the keyboard, but it doesn’t work, just try plugging the cable into another USB port and checking again. If the keyboard uses a different USB connector, it is clear that you do not have drivers installed for the motherboard. Go to the payment provider website, download required driver and install it.

In addition, drivers may be required by the keyboard itself. What do you have simple keyboard, then it can work without drivers. However, modern keyboards for gamers often require driver installation. In this case, you need to go to the website of the keyboard manufacturer, download the appropriate driver and install it on your computer.

Reason #5. The keyboard came out fine.

A broken keyboard is a rare phenomenon. When old keyboards stop working, around the keys they were replaced before, they start to break down.

You cannot turn this option off. If you have checked all the descriptions above, but the keyboard still does not work, you will need to check it on another computer. Possibly, she’s just wrong.

You can outgrow the use of any USB keyboard – even if it’s very budget-friendly, or with a protruding design, backlighting, and a bunch of additional buttons. There are not a lot of USB keyboards, but there are still more keyboards that are connected via the PS/2 port. The number of possible causes of problems with the PS/2 keyboard is small: as a rule, problems arise either with the keyboard itself, or with the wire, or with the connector motherboard. There are many possible causes of problems with USB keyboards, most likely through the USB interface itself. Possible reasons for the USB keyboard not working and ways out of the situation are discussed below.

1. Broken wire

The USB keyboard was working successfully, and then for one moment it stopped responding to input, first of all you need to make sure that you do not connect the wire from the USB port on the computer. If the wire is in place, you can unplug the USB port at any time and reinsert it after a couple of seconds.

2. Secondary USB port

If the first method does not produce successful results, you must reconnect the keyboard to another USB port. Either show those that are one or switch off one maybe the reason malfunction. If the motherboard fails, the voltage strip may cause one or more USB ports to stop working, causing others to lose power. If the keyboard does not regularly request from USB ports, it is necessary to check the functionality of the USB ports themselves, having received before them any other device - a flash drive, mobile device, printer then. If all the USB ports on the computer are not working, the problem will need to be addressed to them.

A keyboard connected to USB 3.0 (port with a blue color output) may not work during the Windows installation process until the driver is installed on the motherboard. For this type, the keyboard must be reconnected to USB 2.0 (white color output port).

3. Reinstalling the driver

If reconnecting to another USB port does not produce results, you need to check what the keyboard is doing. middle BIOS. The fact that you successfully entered the BIOS and moved the navigation keys through these sections means that the problem has occurred on the Windows operating system. In this option you can try installing the keyboard driver. You can get it from the dispatcher Windows devices. You can do this in Windows 7 by clicking on the “Start” menu and selecting “Control Panel.”

For Windows 8.1 and 10 systems, the shortest route is: Device Manager is directly accessible from the context menu on the “Start” button.

Right next to the Device Manager window, open the “Keyboards” section, and on the “HID Keyboard” item, click on the context menu and select the driver.

We confirm the decision.

We are re-decorating the computer.

After re-installation, the keyboard driver will be installed automatically.

For other models of USB keyboards, manufacturers can transfer their own drivers that are supplied with such keyboards. This point needs to be clarified, and if this is the case, then the driver will need to be installed manually by downloading it from the manufacturer’s website or knowing Installation disk The kit comes with a built-in keyboard.

4. Upgrading the USB keyboard support controller in the BIOS

A failure of the motherboard (as a result of a voltage cut) may cause the USB keyboard support controller to be connected to setting up the BIOS. It doesn’t often happen that a USB keyboard support controller is just as good as BIOS connections in the first place. Only those who need to be aware of this nuance should have a computer in pre-installation mode. Until what time Windows system You will be able to use your USB keyboard with your own hands. Of course, in such cases it is impossible to do without a PS/2 keyboard, and there is no way to save any problem that will need to be registered with someone at any time. Alternative option- Vikoristannaya USB - PS/2 adapter.

What do you need to do after upgrading to BIOS? When setting up the BIOS, you need to know the parameter of the USB keyboard support controller. Just say “Keyboard Support” or “Legacy USB Support”. The UEFI BIOS may simply be called "USB Support". Once you know, you need to check so that the value on the other hand is not Disabled, but Enabled. The Enabled value can also be found in the USB Controller parameter. For example, in AMI BIOS version 17.9 USB controllers can be configured in the “Integrated Peripherals” section.

5. The keyboard is faulty

Well, let’s decide, the simplest test is to check the functionality of the USB keyboard itself – its connection to another computer device.

Have a wonderful day!

For reading 5th century. Pereglyadiv 70 Published 01/10/2017

A computer keyboard is one of the main devices for entering information. In this case, if problems arise in their work, they will immediately ask: why the keyboard on the computer does not work. As a rule, in order for the keyboard to start working, it is enough to connect it to system unit There is a special PS/2 or USB port. It often happens that after connecting the keyboard buttons do not respond to pressure, and the lights do not light up. So, let's figure out what to do if the keyboard has stopped working and how to solve the problem on your own.

Reasons why the keyboard does not work on the computer.

We all know that in order to connect the keyboard to the computer, it is enough to insert the plug into a special socket. For any device, the system automatically identifies it and installs appropriate drivers. To see the koristuvach, you only need to bake a little bit. However, failures occur if, after turning on the computer, the keyboard does not show a sign of life. There may be two reasons why the keyboard does not work on the computer.

1. I'll install some mechanical repairs.

• Damage to the cable. Check the integrity of the keyboard cable to avoid damage;
• Broken PS/2 plug. Quite often in practice, situations arise when the pin in the keyboard plug is bent or broken. In order to verify Narazi, unplug the purple plug and look at its inner part. If you notice bent contacts, try to carefully straighten them and connect them back to the system unit;
• There is a problem with the PS/2 connector on . Also, it is often possible to find out if you go out of order with the rose, which is used to connect the keyboard and mouse. Solution – installing a keyboard with a USB interface;

Important! All connections between a keyboard and the PS/2 interface must be completed with your computer turned on. Do not allow the output from the keyboard or the port on the motherboard to be disconnected.

• Malfunction of the board or microcontroller of the keyboard. In this case, replacing the keyboard with a new one will help, since the repair will not be complete.

1. Software problem. Software glitches when a keyboard is installed and connected rarely occur and are not always associated with problems operating system. It is possible that you have entered the BIOS and the keyboard is disabled in software.

These are the main reasons why the keyboard on a computer does not work. Let's now take a detailed look at how to resolve the problems with different types keyboards

Why doesn't the PS/2 keyboard work?

As I have already described, there are plenty of reasons why the keyboard on the computer, connected via the PS/2 interface, does not work. If there are no mechanical problems to watch out for, then it is possible that there is a software problem. Let's move it down below to make the keyboard work again.

1. Open "Start" and press right button Click on the “My Computer” item and select “Keruvannya”.
2. The “Computer Connection” window will open, click on the “Device Manager” section;
3. Among the available devices, you can search for “Keyboards” and open the list.
   
4. If any problems occurred when installing the driver on the keyboard, it will be indicated by a special icon and a hail sign;
5. Select the problematic keyboard, press the right mouse button on it and select the “Vidality” item;
6. After you have removed the keyboard device, you need to open the “Viconty” row and enter the “hdwwiz” command for the additional virtual keyboard;
   
7. The equipment installation master will appear. You and I need to mark the item “Search and automatically installed possession" and press "Dali";
   
8. If the installation appears to be successful, the NumLock light on your keyboard will light up.

As a rule, when software glitch, the ps/2 keyboard may work when installing drivers i8042prt.sys and kbdclass.sys.

Why doesn't a USB keyboard work on a computer?

Keyboards with a USB interface have long begun to replace keyboards with a PS/2 interface. USB keyboards are not so flexible and can work with both USB 2.0 and USB 3.0 ports. Therefore, it makes no difference which port you connect the keyboard to. Vipas are often caught, so USB support The keyboard is enabled in the BIOS. We clearly review this moment, for which we conclude the following terms:

After rebooting the computer, the problem that the keyboard on the computer does not work may persist. Some computer users are experiencing problems with BIOS access on USB keyboards. If you have the same problem, then you need to find a keyboard with a PS/2 connector, go into the BIOS from it and install it. Then restart your computer and connect the USB keyboard.

Short pouches.

As you know, today we agreed with you about the reasons why the keyboard on the computer does not work, and we also found ways to fix the problem. From now on, the Raja will revise the simplest words on his own. So, as often happens, the problem, for example, is with someone who accidentally kicked the keyboard plug, damaged the wire or damaged the connector. In such situations, you yourself can diagnose problems and easily recognize the problems. If the described methods did not help you get your keyboard back to life, I recommend replacing it with a new one. Fortunately, prices for them are affordable and will be swarming with any kind of costly person.