Windows 10: down arrow key not worrking

so this is a software problem. i know this cause the down arrow key for the on screen keyboard also doesn't work

iv gone through the following trying to fix it iv; cleaned out my keyboard, uninstalled the driver and reinstalled it, reset my computer, and tried on screen keyboard which just showed me it was a software problem
any help would be much appreciated as every time iv seen some one post something like this they fix the problem and don't tell any one how to fix it

:)

 

down arrow key stopped working

My razor lycosa down arrow key decided to not respond at some point today. The other ones work and so does the numpad arrow if i turn off the numlock. Sounds like its just broken and im screwed, but any suggestions?

 

arrow key problem

Hi,

Your concern with the arrow keys can be due to the configuration of either the keyboard and/or the computer. To better understand your concern, we'd like to know the following:

• If the specified device is a desktop or a laptop.
• The make and model of the keyboard that you're using.
• If you've tried using a different keyboard.
• If you've installed programs that can bind keyboard keys.
• The version and build of Windows 10 that you're using on your device. To check this, you can perform the steps posted on this
  
  link.

We look forward to your response.

 

Cursor Pointer does not move by Arrow-keys on the keyboard:

Hi Anas,

To further isolate the issue, we would like to ask a few questions:

• What are the troubleshooting steps that you've done in trying to resolve this issue?
• Were you able to use the arrow keys when doing other activities?

Looking forward to your response.