Windows 7 does not recognize any keyboard, except the v1.0 of MS natural ergonomic Keyboard 4000 defective

I have a very strange problem.

I have a desktop computer Windows 7 64-bit edition, all of a sudden about a third of the keys on my Microsoft Keyboard stops working.

So, I bought a new generic keyboard.

The problem

1. If I plug the natural ergonomics MS Keyboard 4000 v1.0-it recognizes the keyboard, BUT it does not recognize one of the buttons on the left and right of the keyboard.

2. If I plug any USB keyboard or a Bluetooth keyboard on it - it does not recognize.

However, the Bureau will recognize any wired (USB) or mouse wireless (bluetooth) connected.

It baffles me that the bureau will recognize a usb or bluetooth mouse mouse - but that it will not recognize the bluetooth keyboard or a usb keyboard.

I tried many things

1. connect the USB and Bluetooth keyboards in my laptop and check that they work properly. -They are.

2. I tried using different USB ports on the desktop. He has not made a difference.

3. my computer allows you to access its bios using F8 - I checked that my material was grateful the Generic USB keyboard before loading Windows. (I could select F8 and bring up the desktop in mode of Bios Configuration).

4. I tried to start Windows in safe mode. That did not help at all.

Any help would be greatly appreciated.

Hello Pauliw,

Please provide detailed information about your question. I appreciate the step by step troubleshooting, and pain that you have taken to resolve your problem. However, there are a few steps more that we can try to diagnose the root cause in order to solve the problem permanently.

You can try the steps in the following Microsoft article and see if it works for you.

Troubleshoot keyboard

Note: There is place for Windows 7 also.

Troubleshoot the incidents of the response to the mouse or wireless keyboard

If the problem persists, try to remove all of the ghosts of your computer devices and then try to use the device. You can see the steps below.

  1. Click Start

  2. In the Search box, type command prompt .

  3. In the list right click on command prompt and select run as administrator.

  4. At a command prompt, type the following command and press ENTER:
    Set devmgr_show_nonpresent_devices = 1

  5. IN the following line from the command prompt, type the following command and press ENTER:
    Start devmgmt.msc.

  6. When the Device Manager opens, click on view

  7. Now, click Show hidden devices.

  8. Remove all the entries that exist for the keyboard and the USB category.

  9. Close Device Manager , and then restart your computer.

Hope it would help. If problem persists always post back with the current state of your computer and the result of the proposed suggestion, we will be happy to help you.

Thank you.

Tags: Windows

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