Windows 10: keyboards that are removed show up in device manager

since a few weeks none of my keyboards work.
first i suspected the usb slot, so i plugged it to anothe, when this was no help to yet another.
since then the device manager shows 3 hid keyboards, all with error 39.
i ried to unistall them and restart the pc. all three are there again.
then i tried a wireless keyboard, then a ps2. error39 again.
next ichechecked the drivers. kbdclass.sys was common to all.
i tested this module with dependency walker and foundthat kbdclass.sys calls ntoskrnl.exe wich calls further modules.some are found, but a number are reported missing. all are apistubs with names beginning with EXT-MS-WIN-.
i spoke with a friend with the same os, and he sent me some files, but he did not have any of these EXT-MS-WIN- files but his keyboard is ok.
i tried to finda downloadable keyboard driver package, but could not find any.
i downloaded some packages wick claimed, that they may help. ( asr, reimage, etc) on the download site they said that they are free, but after a diagnose run they wanted money to do the "repair" job.some even made errors in identifying the number of kerns of my cpu. so i simply deintalled these cheatware progs and i am still looking for solution.
i found reports of problems caused by ntoskrnl.exe. some of these, like sudden freezing ofthe pc or extremely high cpu loads happened by me too.
slowly i am tried of using the on-screen keyboard.

:)

 

USB microphone show up under "Other Devices" in the Device Manager

Hi Luke,

We suggest that you update the device driver. You can do that by following these steps:

• 
  Select the Start button, type Device Manager, and select
  it from the list of results.
  
• 
  Expand the category where your device is located, then right-click on the name of your device, and select Update Driver Software.
  
• 
  Select Search automatically for updated driver software.
  

If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions.

If updating the device driver doesn't work, we suggest that you reinstall the driver:

• 
  Open Device Manager.
  
• 
  Right-click on the name of the device.
  
• 
  Select Uninstall.
  
• 
  Restart your PC and Windows will attempt to reinstall the driver.
  

Let us know how it goes.

Regards.

 

Imaging Devices missing in Device Manager and Webcam doesn't working

Hi,

Since you mentioned that the said driver is missing in Device Manager, what we suggest is for you to check in the Hidden Devices section on Device Manager. Kindly follow the steps below:

• On the desktop, press Windows key + X and select
  Device Manager.
• Click on View and select
  Show Hidden Devices.
• Check for the webcam under Imaging Devices.
• If the webcam is listed, then right-click on it and select
  Update Driver Software
• Select Browse My Computer for Driver Software and follow the prompted steps.

Please post back with the result for further assistance