How to Enable or Disable On-Screen Keyboard in Windows 10?
Step 1: Type "Settings" in search box in taskbar.
Step 2: Click on "Ease of Access".
Step 3: Scroll down and Click on "Keyboard".
Step 4: Under Use the On-Screen Keyboard, click on Button to enable it.
...
https://www.youtube.com/watch?v=FBvoI3uQlP4