What should I do if the keyboard of the Win7 system fails?

In the process of using the computer, it is a common problem to encounter the keyboard keys or some of the keys fail. For this phenomenon, sometimes we can restart the computer to solve the problem temporarily. If you want to solve it completely, you need to do some Settings, now this article has brought you some setup methods, users can try to solve if they encounter keyboard failure.

First, the digital keypad fails

If the numeric keypad on the desktop computer fails, it is very likely that you accidentally pressed the Numlock button, closed the keypad, and identified the method. You can see if the indicator light on the keyboard is lit.

Solution Press the Numlock button again to use it.

If the notebook keyboard is out of order, because the space of the laptop keyboard is limited, the function of the numeric keypad is integrated in the letter key when designing. If the button on the right side of the notebook keyboard cannot be typed, Digital words.

At this time, you can press the fn+Numlk key to switch between alpha/numeric input. Some friends don't know this. When the letter is not available, it is thought that the keyboard is broken.

Second, part of the button failure

Keyboard part of the key failure is generally due to the internal circuit board of the computer keyboard is faulty, the keyboard internal circuit board or conductive plastic is not clean for a long time, there are too much dust and dirt, so that Failure to turn the circuit on will result in partial button failure.

If this is the reason, we have to clean the keyboard and clean the dirt and debris inside.

1. First, you buckle up the broken keycaps (keyboards on the keyboard);

2, use the nails to directly buckle the edges, slowly buckle up, don't be afraid Bad;

3, after the buckle, look at the inside of the silicone (milk white) whether there is a shift, take a small screwdriver to dial back.

Here are some specific steps to clean the keyboard:

1. Unscrew the screw to open the keyboard. When opening the keyboard, pay attention to the button surface (the side facing us when we use the keyboard), the circuit board is up, so that the conductive plastic on the button will not fall off;

2, the circuit board is usually thin A layer of plastic film, we use high-concentration alcohol cotton (medical alcohol cotton can also, the higher the concentration, the better), gently scrub, dust and dirt are wiped off the part of the button failure, especially rub more;

3. Clean the part of the conductive plastic that is out of order. If the part of the conductive plastic that is malfunctioning is damaged, we can change the conductive plastic on the unused button to the damaged part, because some keys are basically used. If you can't use it, use the keyboard to extend the life of the keyboard.

4, the corners of the keyboard outside the conductive plastic and the circuit board can be brushed with a soft brush, and the return will be brushed off;

Check if some of the soldering modules are broken and disconnected. If you use an electric soldering iron, you can solder them.

6. After the alcohol is evaporated, reinstall the keyboard!

Third, the keyboard driver causes the keyboard to malfunction

If the keyboard driver is not compatible and the keyboard fails, we need to update the keyboard driver.

1. On the desktop, start —— control panel;

2. Find keyboard options;

3. Cut to the hardware page and click Properties;

4, switch to the driver page, click on the driver;

5, update;

After completing the driver update, the user can see the previously unused buttons now Useless. The causes of keyboard failure are often the above, but keyboard plugs, line problems, motherboard, CPU failure may also cause some keys to fail, but this is not common.