Using the mouse, confirm the problem.
Right-click Start menu, open Device Manager
Can also Event Viewer: Event 411, Kernel-PnP (Log Name: Microsoft-Windows-Kernel-PnP/Device Configuration, Source: Kernel-PnP, Event ID: 411, Level: Error, User: SYSTEM, Task Category: None)
Device status:
Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)
Using mouse, click Start, Windows Ease of Access folder, On Screen Keyboard