Instruction
The main reasons for such a malfunction lie in a hardware failure or software error. Checking the hardware version is very simple - check the plug on your keyboard and the connection connector. If visually everything is in order, replace the keyboard with a working one and restart the computer. If it is no longer possible to use this device, check the version software malfunction.
First, try restarting your machine. Maybe, operating system localize and eliminate software failure. Try reinstalling the keyboard. To do this, in the "System Properties" window of the "System" item of the "Control Panel", find the "Hardware" tab. Click the "Device Manager" button. In the "Device Manager" window, select the "Keyboard" item and delete it, close the "Device Manager". Then enter the "Install Hardware" item and run the "Installation Wizard". Click the Next button and wait for the installer to detect the keyboard. The OS will indicate the detection and operation of the keyboard by turning on the Num Lock indicator light. If the program displays a message that the installation of new devices is complete and prompts you to reboot, then click the "No" button, since the keyboard is already functioning. Also click the "Finish" button in the "Add New Hardware Wizard" window and exit the "System Properties" menu.
One of the options for a malfunction may be that the operating system does not detect the required driver. To reinstall the driver, go to your keyboard manufacturer's website, select the correct model, download the archive and unzip it. As a rule, such drivers are equipped with their own installation program, and then just run the file. If this is not available, then you will have to launch the "Device Manager", select the "Update Driver" command and specify the path to the directory in which the unpacked driver is located in the manual search mode. The computer must be restarted after installation.
Often, a non-working keyboard is the result of a virus program that has settled in your machine. A characteristic sign of this is the failure of the mouse, as well as the touchpad. Check the system with an antivirus program. It's best not to rely on free utilities that promise instant success and cure your computer. Use proven and well-known antiviruses. The chances of success with such collateral are much higher.
A very real reason for the failure of the keyboard may also be the lack of a BIOS connection. This failure is especially common on machines with a built-in keyboard. Correcting the situation is quite simple. Enable the BIOS while the computer is booting. Find the tab with the list of input and output devices. Select USB Controller and turn on Enabled. Enable the same mode for USB Keyboard Setup. Exit the BIOS with confirmation of saving the new settings. In the event that none of the above did not help you, then contact the service center.
Everyone can cope with the problem of a non-working keyboard on a stationary computer. The solution is to replace the device with a new one or connect a non-working device to a different connector. Alternatively, by opening the keyboard case, you can try to clean it from dust and small particles. But what to do if the laptop keyboard is out of order? This article will look at the causes and methods of resuscitation of the main input device on a portable PC.
All malfunctions associated with the keyboard can be divided into two groups: software and hardware. In most cases, there are violations in the operation of the software (errors in the system registry, input device drivers). Such problems are solved using the functions of the OS itself. A smaller group is hardware problems, which usually require contacting a service center.
Many users, instead of shutting down the PC, often resort to such useful functions as "Dream" or "Hibernation". It certainly cuts down on time a lot. Windows boot and allows you to save the current state of the system. But too frequent use of such features leads to incorrect operation of resident programs. Therefore, our first recommendation is a normal reboot.
Users of Windows 10 (as well as other versions of this OS), who have it by default, will have to disable it:
First, we will find out if our problems are related to the Windows settings, and then we will consider several solutions.
Keyboard test on boot
Keyboard functionality can be checked when the computer boots up. To do this, simply press the access function keys in the BIOS. Each laptop model has specific keys, but the following can be recommended: ( "ESC",DEL, F2, "F10", "F12"). If at the same time you manage to enter the BIOS or call up any menu, then the problem lies in the configuration of Windows itself.
Enabling "Safe Mode"
Check if the keyboard works in safe mode. To do this, follow the links below to see how to boot a computer without third-party resident programs.
So, if the system does not respond to keystrokes at startup and in safe mode, then the problem lies in a hardware malfunction. Then we look at the last section of the article. Otherwise, there is a chance to fix the keyboard using software manipulations. More on setting up Windows.
Method 1: System Restore
"System Restore" is built into Windows tool, which allows you to return the system to a previous state.
Method 2: Checking drivers
Method 3: Removing resident programs
If the laptop keyboard works in safe mode, but refuses to perform functions in standard mode, then a certain resident module is interfering with the normal functioning of the input device.
The following steps are recommended if the previous methods have failed. The input device is not working, but it is still possible to send a command to the system. For this we use "On-Screen Keyboard":
If the above methods do not help, then the problem is most likely related to the hardware. Usually these are violations of the loop. Generally speaking, opening the laptop case and getting to the ribbon cable is not a problem. Before disassembling your computer, make sure it is under warranty. If yes, then you should not violate the integrity of the case. Just take the laptop and take it to the warranty repair. This is provided that you yourself observed the operating conditions (did not spill liquid on the keyboard, did not drop the computer).
If you still decide to get to the cable and open the case, what's next? In this case, carefully inspect the cable itself for physical defects or signs of oxidation. If everything is in order with the train, just wipe it with an eraser. It is not recommended to use alcohol or any other liquids, as this may only impair the performance of the ribbon cable.
The biggest problem may be a malfunctioning microcontroller. Alas, here you cannot do anything yourself - a visit to the service center cannot be avoided.
Thus, the restoration of the keyboard of a portable PC consists of a series of actions performed in a certain order. First of all, it turns out whether the malfunction of the device is related to third party applications. If so, then the considered methods Windows settings to fix software bugs. Otherwise, hardware intervention measures are required.
The keyboard is the main tool when working on a computer, without which work is almost impossible. Of course, you can enter information using the mouse and the on-screen keyboard, but this method is inconvenient and full-fledged work will not work.
In this article, we will tell you what to do if the keyboard on your computer does not work and consider all the possible causes of this malfunction.
The keyboard is a fairly simple device and usually works flawlessly. However, there are times when the keyboard light is on but nothing is printed.
There are two types of reasons why a computer keyboard may not work:
Consider all the main reasons why the keyboard does not work and troubleshooting methods.
The first step is to assess the physical condition of the keyboard.
Look at the button indications cap lock and Num Lock. Most likely, if they work, then physically everything should be in order with the keyboard.
Inspect the keyboard cable with your eyes. It may be pinched or cut. For example, many pet owners have pets that gnaw through cables.
Also, visually check the keyboard connection port for breaks or bends. There are two types of keyboard connection ports - USB and PS / 2.
It often happens that in the PS / 2 port, when trying to connect to a computer, people break off the tip of the core and the keyboard does not connect.
If externally the USB keyboard cable and connection port look good, then try plugging the keyboard into a different port Computer USB. Perhaps the port on the computer itself is corrupted. If the keyboard works in another port on the computer, then you have a problem with USB port ohm. Usually there are several of them on the computer and you can just leave the keyboard connected to the port that works.
In the case of a keyboard with a PS / 2 port, you should check the functionality of the keyboard connection port on another computer, since there is only one such port on the motherboard. To test the PS/2 port on your computer, you'll have to find another such keyboard.
A flooded keyboard is a headache for all IT people and a goldmine for all laptop repair service centers. Very often, when working on a computer, people pour tea, coffee, beer and other liquids onto the keyboard. As a result, the keyboard may fail.
As a rule, visually and by smell, it is easy to determine that liquid has been spilled on the keyboard. Take a close look at the keyboard. Remove a couple of keys. If you see that there are traces of spilled liquid or food on the keyboard or under the keys, then you have two options. Either buy a new keyboard, or meticulously disassemble the flooded keyboard, clean it, dry it and assemble it back. With a high degree of probability, the keyboard will work.
Earlier, we have already talked in detail about what is at home.
In the event of a computer power failure, the BIOS settings may change, which has an item on enabling or disabling USB keyboard support in the computer.
Additionally, in this way you can check the health of the keyboard in principle, since it may not work in Windows, but work in the BIOS. In this case, the failure is caused by software or drivers.
To enter the BIOS and check the settings, do the following:
You can at the same time set the rest of the USB-related BIOS settings to the Enable state. Perhaps you will earn ports on the front panel of the computer case that once stopped working.
Keyboards with older PS/2 connectors are more prone to software crashes. However, there are still quite a lot of such keyboards in use, although manufacturers have almost stopped producing them.
To solve the problem with a non-working keyboard due to software you need to turn on the computer and enter the desktop. Since the keyboard has stopped working and does not print, but on account a password can be set, you will need to use the on-screen keyboard and type the password with the mouse.
Now that you are on the desktop of your computer, you need to get into the Device Manager.
In Windows 8 and Windows 10, to do this, right-click on the button Start and select Device Manager.
In Windows 7 left click on the button Start. Next, right click on the word Computer and select Computer management — Device Manager.
Device Manager displays information about all devices on your computer. Expand the Keyboard branch. If an orange question mark is lit next to your keyboard, then the device is not installed correctly in the system.
Right click on the keyboard and select Delete.
The computer will re-interrogate all devices and install the keyboard correctly.
Any technology tends to break down and fail. If the keyboard was purchased relatively recently, then you may have encountered a factory defect. In this case, you can contact the keyboard manufacturer's support service and count on a replacement device.
The fact is that many manufacturers value their reputation and, without entering into a long debate with the buyer, they immediately send a brand new keyboard by mail.
If the keyboard has been with you for more than a year, then most likely it has failed due to the service time and you should buy a new one.
If you turn on the computer, and the keyboard does not work, does not respond to keystrokes in any way, and the indicators do not light up, then there can be only two errors: a hardware failure or a software failure.
There are very few hardware problems that can cause a keyboard to fail. Usually this is a lack of contact in the connector (the plug is not fully inserted into the connector), a malfunction of the input device itself, and a malfunction of the motherboard port.
First of all, you need to make sure that the keyboard is connected correctly, especially for keyboards with a PS / 2 connector. The keyboard has a purple plug and it must be connected to the same color connector in the system unit. The plug may not be fully inserted into the jack, resulting in loss of contact. You should check this moment, but it is better to disconnect and reconnect the keyboard. After all the manipulations, try restarting your computer. It often happens that during the initialization of the device some kind of software failure occurs. A reboot usually solves such problems.
To make sure that the keyboard is working, as well as the port for connecting it, you will need to find another working keyboard. If the known-good keyboard on your computer works fine, then the problem is in the input device itself. In this case, you will have to go to the store for a new keyboard. If the initially working keyboard does not work on your computer, and yours, on the contrary, functions normally on another computer, then the motherboard is probably defective. Correcting this malfunction without computer diagnostics is problematic, so it is better to contact specialists. Also, do not forget that you may still have a software error, which we will discuss below.
A software malfunction, as a rule, consists in the incorrect operation of the driver. It is possible to fix this problem provided that the mouse is "in service".
Go to the Start menu and then Control Panel. Here, open the "System" section and launch the "Device Manager". If there is a problem with the drivers, then next to the keyboard in the list there will be a yellow triangle with an exclamation mark.
Right-click on this line and open "Properties". Now go to the "Driver" tab and click on the "Uninstall" button. Confirm your actions and the keyboard driver will be removed from the system.
Now you should update the hardware configuration and search for connected devices. To do this, go to the "Action" menu of the Device Manager and click the "Update hardware configuration" item.
The system will detect a new device (keyboard) and reinstall the drivers for it. If you are using a multimedia keyboard, you may need to install the drivers from the disc for it to work properly. Such a disk is usually supplied as a kit. It must first be installed in the optical drive and, when prompted by the Add New Hardware Wizard, specify the path to the disk for installing the drivers. If the installation is successful, the LED indicators on the keyboard will light up. At the end of the Found New Hardware Wizard, you will need to restart your computer for the changes to take effect.
With the fact that the USB keyboard does not work at boot, you may encounter in different situations: it often happens when you reinstall the system or when a menu appears with a choice of safe mode and other boot options Windows.
As a rule, this situation does not occur with a keyboard connected using the PS / 2 port (and if it does, the problem should be looked for in the keyboard itself, the wire or the motherboard connector), but it may well occur on a laptop, since the built-in keyboard may also have USB interface.
Before you continue reading, see if everything is in order with the connection: is it in place USB cable or the wireless keyboard receiver to see if anyone has touched it. Even better, take it out and plug it back in, not in USB 3.0 (blue), but USB 2.0 (Best of all, in one of the ports on the back of the system unit. By the way, sometimes there is a special USB port with a keyboard and mouse icon).
Most often, to solve the problem, it is enough to go into the BIOS computer and enable USB keyboard initialization (Set USB Keyboard Support or Legacy USB Support to Enabled) when you turn on the computer. If this option is disabled for you, you may not notice this for a long time (because Windows itself “connects” the keyboard at boot and everything works for you), until you need to use it when the operating system boots.
It is possible that you cannot enter BIOS either, especially if you have a new computer with UEFI, or 8.1 and fast boot enabled. In this case, you can get into the settings Another way (Change computer settings - Update and recovery - - Special boot options, then in additional options select enter in UEFI settings). And after that, see what can be changed to make everything work.
On some motherboards support customization USB devices boot input is a little more sophisticated: for example, in my settings UEFI has three options - disabled initialization during ultra-fast boot, partial initialization and full initialization (while fast boot must be disabled). And the wireless keyboard only works on boot in the latest version.
I hope the article was able to help you. And if not, describe in detail how exactly you had a problem and I will try to come up with something else and give advice in the comments.
