Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.

If you're seeing the error "No Boot Device Available" when you start the computer, then you're having an issue with your hard drive. This error might be reparable ...

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

To fix No driver was found that can be installed on the current device error, update your operating system and then follow these tested fixes: Uninstall External PCI Express card Check for Driver ...