How to solve the problem of unresponsive laptop keyboard

It is reported that some friends who just bought a laptop are not very familiar with the laptop. They thought it was good when they bought it, but then they couldn't type. What happened? Some users may think that there is a problem with the laptop they purchased, but it is not necessarily the case. For this reason, the editor has compiled solutions for laptop keyboard unresponsiveness.

Why is the laptop keyboard malfunctioning? There are two situations where the laptop keyboard fails. One of them is the more common situation where the letter keys will be displayed as numbers. The other situation is that the laptop keyboard fails and nothing happens when you press it. So how to solve it? Laptop keyboard not responding? Next, the editor will tell you how to solve the problem of laptop keyboard failure.

Laptop keyboard failure

Step one: Check the hardware device

If it is a desktop computer, check the keyboard cable and socket, if it is USB Try changing the interface to a USB socket;

If it is a laptop, try connecting an external keyboard

Start-Run (enter regedit)-OK or press Enter to open the registry editor

Keyboard map-1

In the registry editor, we expand HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet in turn.

Notebook Picture-2

Expand the CurrentControlSet expansion item in order: Control\Class

Keyboard not responding Figure-3

Found in the expanded item of Class:

{4D36E96B-E325 -11CE-BFC1-08002BE10318}

and left click:

{4D36E96B-E325-11CE-BFC1-08002BE10318};

Notebook Picture-4

Find the UpperFilters item in the right window of {4D36E96B-E325-11CE-BFC1-08002BE10318}, and right-click: UpperFilters, in the drop-down Click in the menu: Delete;

Restart the computer.

Keyboard diagram-5

After restarting the computer,

Right-click the desktop computer-Properties- Device Manager, click: Keyboard, then right-click: PS/2 Standard Keyboard - Properties

##Keyboard Map-6

In the PS/2 standard keyboard, in the device status bar of the properties window, we can see: The device cannot be started.

Keyboard Map-7

Open the Registry Editor and use the above method to find:

{4D36E96B-E325-11CE-BFC1-08002BE10318};

Left click:

{4D36E96B-E325-11CE-BFC1-08002BE10318}, in the corresponding right window, Right-click on the blank space - New (N) - String value (S)

Notebook Picture-8

The new string value item is named: UpperFilters

The keyboard does not respond Figure-9

Double-click with the left button: UpperFilters, enter: kbdclass in the numerical data (V) column of the pop-up edit string window, and then click: OK

Keyboard Map-10

UpperFilters item numerical data (V) is: kbdclass, exit the registry editor.

Keyboard Failure Picture-11

Restart the computer and the keyboard returns to normal state.

The above is the method to solve the problem of unresponsive laptop keyboard.

The above is the detailed content of How to solve the problem of unresponsive laptop keyboard. For more information, please follow other related articles on the PHP Chinese website!