How to fix a keyboard or some keys that don't work on my PC? - Step by step guide

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Marie-Ange Demory
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The keyboard is a tool that contains a set of letters that are used to write and have the computer control, we can also put a virtual keyboard on the computer screen. These do not get damaged easily, but they can sometimes have some types of errors that can cause problems during use.

But you shouldn't worry about that, as there are a few methods to fix these problems yourself, and you can even check the working status of an online keyboard. Some of these errors commonly occur in keyboards and can even make you think it's some kind of problem there configuration it's showing up in the system, but it turns out it's something simpler.



How to troubleshoot a PC key?

To troubleshoot a key on your PC, you need to follow these steps:

  • Disconnect and reconnect the device from your computer.
  • So you have to restart it, as in many cases the keys stop working due to a bad connection.
  • We recommend that you visit the keyboard manufacturer's website e update the device driver, so you can download and install the latest driver update later.
  • Then, unplug and check the keyboard connector; Remember that the PS / 2 connector has six hooks, if they are bent you need to straighten them carefully, as they are very delicate. Keep in mind that if you have a broken hook, the ideal would be to buy another keyboard.
  • Try to try another word processing program, because in some formats the keys may not work correctly.

How to fix bugs in a PC keyboard?



It is necessary to perform a circuit repair which is very delicate. If you do not feel qualified, the ideal would be to consult a technician. For this procedure you need to have a digital multimeter, for an screwdriver, cotton and conductive paint. The steps to follow are those:

  • Open the keyboard carefully using the screwdriver, remove the membrane from the keyboard and look at the part that has the printed circuit that is what counts.
  •  Hence, it is necessary clean the entire membrane, using the circuit cleaner liquid and wait for it to dry. You should examine the circuit in detail to be able to identify where the damaged or dusty segments are.
  • As soon as the problem is identified, it is possible use the multimeter, placing it in one of the nodes to measure the resistance.
  • So you have to use the conductive paint, using needles so that the circuit lines are fine.
  • Finally, you should use the multimeter for measure the electrical flow, if the result is close to 0 it is better, as the continuity of the circuit is in good condition.
  • Remember to close the keyboard and connect it to the computer to verify that the keyboard functions normally.

Find out some of the reasons why the keyboard may be faulty


Keyboard errors are very common and have various origins. Most of these problems are due to the excessive dirt that these keyboards may have, such as: dust, debris, and other small elements, cause these failures by damaging the keyboard circuitry.

Another critical factor that causes the device to fail is the humidity. Care should be taken where you place these keyboards, as moisture can cause sulfation in them, causing the current flow to completely shut off.


At the same time, if you do not pay attention and get the keyboard wet, you can damage the device board. But you can take care to prevent all these inconveniences.

At the same time, you need to make sure of do not have the keyboard and computer in dusty spaces. Avoid eating food on it, try not to have the device in ventilated spaces so that the humidity does not cause damage, and if the keyboard has been wet, the ideal is to turn off the equipment and unplug it immediately to let it dry and therefore avoid further damage.

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