Wait first

Updates configuring a major feature upgrade (20H2, 22H2, etc.) can genuinely take 20–40 minutes on slow HDDs. Only intervene after 60 minutes with no disk activity (check the disk activity light).

Safe force reboot

Hold the power button for 10 seconds. Windows typically rolls back the incomplete update automatically on the next boot and presents the desktop.

If it loops

If the loop repeats: boot into Windows RE (hold Shift while clicking Restart, or boot from USB) → Troubleshoot → Advanced → Uninstall Updates → Uninstall the latest quality update.

Manual rollback via command prompt

dism /image:C: /Get-Packages

Find the most recent package (sort by date). Then:

dism /image:C: /Remove-Package /PackageName:[PackageName]

Prevent recurrence

Ensure at least 20 GB free disk space before major updates. Updates fail and corrupt mid-install when disk is full.