Notebook keyboard Dislocation input error How to do?

When we use a laptop keyboard to type, sometimes there will be the letter and the letter on the keyboard inconsistent, which may be the hardware keyboard plate, but also may be the system caused by virus Trojan. Of course, if it is a hardware problem, it can only be repaired. But if it's a system, what are we going to do? The following small series to introduce the notebook computer keyboard input error solution, hope to help everyone.

First of all, how to judge a hardware problem or a system problem?

We can find an external USB keyboard, connect with the laptop, and then type, if the same error occurs, then the problem is the system. If no error occurs, it is a problem with the notebook keyboard hardware and needs to be serviced.

What happens when a keyboard input error is caused by a system reason?

1. First turn on the computer, turn on "Start Menu"-"All Options"-"Accessories"-"Run" option, open the Run window. (Win7 above system can press the "Win+r" key at the same time, but if the keyboard is wrong, it will not necessarily open). As shown in the following figure.

2, then in the "Run" Window dialog box, enter the "regedit" command (if you can not enter the words, copy and paste in), and then click the "OK" button. As shown in the following figure.

3, this time the Registry Editor window opens, in the window, in turn, open "HKEY_LOCAL_MACHINE"-"SYSTEM"-"CurrentControlSet"-"Control"-"Class" option. As shown in the following figure.

4, then in the "Class" option in the directory, find the {4d36e96b-e325-11ce-bfc1-08002be10318} option item, open, on the right side of the window to find the "upperfilters" value, and delete it. As shown in the following figure.

5, after the successful deletion, we right-click the desktop computer icon, and then click to select the Management option. As shown in the following figure.

6, this opens the Computer Management window, we click to open the System Tools-Device Manager-keyboard options, right-click the standard keyboard, and then click the Uninstall option. As shown in the following figure.

7, after the successful uninstall, we go back to just the registry {4d36e96b-e325-11ce-bfc1-08002be10318} option, in the right window right click on the blank, and then click the new-Multiple string value option. As shown in the following figure.

8, and then name the new "multiple string value" as "UpperFilters." Then the double hits the multiple string value, changes the value data to "Kbdclass", and then clicks the OK button, and finally exits the registry. This will successfully solve the problem of keyboard input errors. As shown in the following figure.