If individual keys don't work well, take the keyboard apart. (There are two kinds of keys: resistive and capacitive, but capacitive ones are generally not faulty and expensive, and most of them are resistive in the market. ) Wash the conductive film with alcohol.
There are several reasons why the keyboard of a desktop computer will break down:
1. When editing or processing a file, no matter how you type the keyboard, if you want to enter any words and symbols, no words and numbers will appear on the display frequency of the computer.
2. The characters and letters entered on the keyboard are inconsistent with those displayed on the computer screen.
Repair method;
1, first check whether the keyboard is not plugged in properly, the keyboard is not connected to the computer, and observe whether the light on the keyboard is on. If the light on the keyboard is on, but the characters and letters typed by the keyboard still cannot appear on the computer, then the keyboard is broken and needs to be replaced with a new one.
2. When the computer keyboard fails, the input characters and letters can't correspond to those displayed on the display screen. First check whether there is a problem with the switch key of uppercase and lowercase letters, and whether it is stuck for some reason. If so, just push the key by hand to reset it. When a character is missing, it may be that the dust on the keyboard or the debris falling from eating snacks has entered the keyboard, which has caused some obstacles to the keyboard. As long as the dust and debris in the keyboard are cleaned up, the keyboard can be reused.
The laptop keyboard will fail because:
1, when using the letter keys, the letter keys become numeric keys, because the letter keys and numeric keys of the notebook computer are combined. Generally, you can switch to the small numeric keyboard intelligently by pressing fn Numlk.
2. When using a notebook computer, the keyboard is pressed irregularly and the keyboard is garbled, which is generally the problem of the keyboard itself.
Repair method:
1. The letter keys and numeric keys of the notebook computer are combined. If the entered letter becomes a number, you can use the fn Numlk key to recover it.
2. When the keyboard of the notebook computer is garbled, the keyboard itself fails and cannot be repaired by itself, so we can only ask professionals for help.