Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.
Some users have complained about this problem that when they start their computer, it doesn’t boot. Instead, a Default Boot Device Missing or Boot Failed blue ...
The error indicates a problem with your computer’s PXE. This error often occurs when your boot sequence is misconfigured in your BIOS, or your boot device (usually ...
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