Several reasons why keyboard does not work on the computer

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2018-03-20 10:07:08

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The Man, suddenly found that has stopped working the keyboard on the computer, few people would envy. And, as is often the case, such troubles most often happen just when the “burn” the submission of reports, is to run a set of the graduation project, during the battle for the fate of the world once a computer game, etc.why does not the keyboard on the computer on the other hand, the question “why doesn't the keyboard on the computer” is set not too often since the beginning of the “era USB” a “growing pains” in the field of computing devices in the past. In light of this breaking keyboard – the occasion for a kind of pride in my “luck”.

Connection

In all modern keyboards to connect to the motherboard use the serial bus interface USB. Before discontinued standard PS2 it has a number of advantages, among which can be highlighted the possibility of “hot plug”. That is, the user can theoretically included in the system unit to connect and disconnect the USB connector into the corresponding free slot. And many use it, especially the owners of portable computers. In such case, the two negative moment. First, it was noted that frequent switching of the device causes the spring-loaded contacts in the plug lose their elasticity, resulting in impaired performance (disappearing power line or data). has stopped working the keyboard on the computerNot surprisingly, this is followed by the question ‘why keyboard does not work on the computer”. Thus, with frequent connection plug wears out and requires replacement. Second, sometimes when hot swapping of devices, it would collapse, so this opportunity should not be abused. To check the contacts you need to turn off the computer, unplug the keyboard and plug carefully to reconnect, gently pochitav in the connector. Sometimes the contacts are able to return the old needle in a spring loaded state.

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Electric

Like any other USB device, the keyboard gets its power directly from the port. And since the internal implementation of the bus such that one management chip connected to several connectors, turning on the power devices (500 mA current), their efficiency is not guaranteed. The solution is simple: if you have any question “why doesn't the keyboard on the computer”, then you need to disconnect all USB devices except the most necessary and check the performance.keyboard does not work right When a large number of simultaneously active USB peripherals, you need to use an intermediate coupler with an external source. Also, quite often the problem with USB is observed in old computers and laptops, power supplies, and other items which have worn out and are not given the required voltages. The solution is similar to the above. And, of course, do not forget that the problem may be in the connector: for testing, you must connect the plug to a different USB port.

Software fault

Modern operating systems to communicate with the keyboard use the MCP driver. Sometimes it stops to work correctly. Causing the user can not understand why the keyboard does not work on the computer. You must use the mouse to go in “device Manager” and try to update the driver in paragraph “Keyboard”. If not, then you need to remove the device, uninstall the driver the appropriate command and reconnect the keyboard to the computer – should work Plug&Play.

Incident settings

In the BIOS of modern motherboards there is an item that allows you to refuse the use of USB, mode Disable. If for some reason this happens, then you need to find an old PS/2 keyboard, use it to go to BIOS (Del key immediately after power-on) and allow USB. Another option – to reset to the initial state, closing the appropriate jumper Clear CMOS on your Board (the exact location is specified in the instructions). Beginners are sometimes faced with the fact that the keyboard does not work right. This can be caused by accidentally pressing the NumLock, toggle between the right digital block. If a similar indicator is lit, you must click the button again to switch to another state.


Article in other languages:

AR: https://tostpost.com/ar/computers/11318-several-reasons-why-keyboard-does-not-work-on-the-computer.html

BE: https://tostpost.com/be/kamputary/20267-nekal-k-prychyn-chamu-ne-pracue-klav-yatura-na-kamputary.html

DE: https://tostpost.com/de/computer/20283-ein-paar-gr-nde-warum-funktioniert-die-tastatur-auf-einem-computer.html

ES: https://tostpost.com/es/los-ordenadores/20292-algunas-razones-de-por-qu-no-funciona-el-teclado-en-el-equipo.html

HI: https://tostpost.com/hi/computers/11326-several-reasons-why-keyboard-does-not-work-on-the-computer.html

JA: https://tostpost.com/ja/computers/11326-several-reasons-why-keyboard-does-not-work-on-the-computer.html

KK: https://tostpost.com/kk/komp-yuterler/20262-b-rneshe-sebepter-nege-zh-mys-stemeyd-komp-yuterde-perneta-ta.html

PL: https://tostpost.com/pl/komputery/20236-kilka-powod-w-dlaczego-nie-dzia-a-klawiatura-na-komputerze.html

PT: https://tostpost.com/pt/computadores/20235-v-rias-raz-es-por-que-o-teclado-n-o-funciona-no-computador.html

TR: https://tostpost.com/tr/bilgisayarlar/20266-birka-nedeni-neden-klavye-al-m-yor-bilgisayarda.html

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ZH: https://tostpost.com/zh/computers/12104-several-reasons-why-keyboard-does-not-work-on-the-computer.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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