Fixed laptop external keyboard failure (no problem with built-in keyboard)

When the keyboard is unavailable, check whether the online banking certificate is installed. The current online banking certificates are all 32. If the computer system is 64-bit, it is most likely that the external keyboard suddenly fails due to compatibility issues.

Note: the following solutions are only taken into consideration from the technical aspect. If you have any concerns about the security of online banking, contact the relevant bank for help.
I. Postal Savings Bank
[Fault description]
The keyboard fails after the security control of the Postal Savings Bank is installed.
[Solution]
Uninstall the certificate first. Then find the PECKP. SYS file on drive C.

Delete C: \ WINDOWS \ system32 \ drivers \ PECKP. SYS. Restart the computer and solve the problem.

II. Bank of China
[Fault description]
After installing Bank of China online banking, the keyboard fails and the security mode is normal. The problem persists after the online banking plug-in is uninstalled.
[Solution]
Delete C: \ WINDOWS \ system32 \ drivers \ Protectora. sys. Restart the computer and solve the problem.

III. China Merchants Bank
[Fault description]
After installing the China Merchants Bank online banking plug-in, the keyboard fails. After entering the system, press the first button to use the plug-in. After that, no buttons will work. The security mode is normal.
[Solution]
Delete C: \ WINDOWS \ system32 \ drivers \ ETD. sys. Restart the computer and solve the problem.

IV. Agricultural Bank
[Fault description]
After installing the online banking plug-in of the Agricultural Bank of China, the keyboard fails. After entering the system, press the first button to use the plug-in. After that, no buttons will work. The security mode is normal.
[Solution]
Delete C: \ WINDOWS \ system32 \ drivers \ PECKP_x64.sys, restart the computer, and solve the problem.

If the problem occurs only after the driver is installed, try the following method for your reference only! This method does not damage the driver file. The driver file is provided by the windows system. It is automatically installed after being downloaded and started.

Sometimes the keyboard fails for no reason. It seems that the keyboard does not have a power supply, but it does not respond to the press. However, when you press the keyboard, the system will sound like a sound of driver installation, after years of computer training, my instincts tell me that my keyboard driver may be gone. I used a USB keyboard myself. At that time, I tried to search for the driver to install the keyboard, after the installation, I was even more depressed and worried. Most people thought that if the system had something to do, the driver was installed. If the driver was installed, the problem could not be solved !!! Very anxious! At this time, I searched Baidu for this kind of questions, but you did not find what you wanted, either asking you to reinstall or install the driver! So annoying!

As a result, I found an article about modifying the registry when I turned over a dozen pages of Baidu. However, I personally think that my computer technology is not good, if the keyboard device has a problem, why does it involve the registry? At that time, I still don't believe it, but I don't believe it. Just try it!

The result is a try. It's a success! Please refer to the method ......

1. First open "Computer Management" (my computer-> right-click-> Manage)

   

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2. Even if it is uninstalled, it won't happen!

Open the registry after uninstalling (win + r enter regedit)

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3. Now we can see that the registry follows the path:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E96B-E325-11CE-BFC1-08002BE10318}

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4. Delete: UpperFilters and restart the computer,

After restarting, choose computer management (my computer> right-click> Manage)

You will find that the driver is still there, that is, how is it displayed when the driver is uninstalled!

In this case, the next uninstallation is the same as the above steps.

Enter the registry and enter the same location.

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E96B-E325-11CE-BFC1-08002BE10318}

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5. Add project name: UpperFilters content: kbdclass

Then restart! Congratulations! you have recovered your keyboard and can use it normally!

This article from the "Tang Wan technology blog" blog, please be sure to keep this source http://tangwan.blog.51cto.com/7098506/1574124

Fixed laptop external keyboard failure (no problem with built-in keyboard)