I don't normally recommend installing Windows 11's optional updates – but in the case of this bug, I'd make an exception

Wondering why your Windows 11 desktop keeps vanishing? It's because of this nasty bug.
TWCN Tech News

Keyboard not working after Windows 11 Update

If your keyboard is not working after the Windows 11 Update, use the following suggestions. Before proceeding, I suggest you connect your keyboard to another USB port and check. If the Windows Update ...
Windows Report

Windows 11 KB5074105 Fixes Start Menu, Black Screen, and Activation Bugs

Microsoft ships Windows 11 KB5074105 to Insiders, raising builds to 26100.7701 and 26200.7701 and addressing multiple system issues.