If the on-screen keypad/keyboard is not appearing on a touchscreen device, some common causes are:

1. Touch Keyboard is disabled
   • On Windows, go to Settings > Personalisation > Taskbar and ensure Touch Keyboard is enabled.
     
     
      
2. Tablet mode or touch settings issue
   • Disconnect and reconnect any physical keyboard.
   • Restart the device and test again.
3. Touch keyboard service is not running
   • Press Windows + R, type services.msc, and press Enter.
   • Find Touch Keyboard and Handwriting Panel Service.
   • Make sure its status is Running and the startup type is Automatic.
4. Windows does not detect the device as a touchscreen
   • Open Device Manager.
   • Expand Human Interface Devices.
   • Verify that HID-compliant touch screen is present and enabled.
5. Application-specific issue
   • If the keypad is missing only in a specific application (for example, TPS, kiosk software, or a browser), click directly in the text field and test in another app such as Notepad to determine whether the issue is system-wide or application-specific. 

For a quick workaround, open the On-Screen keyboard by pressing Windows + Ctrl + O: