If there are no boot problems the BIOS typically has the settings to change:
Legacy > UEFI hybrid (with CSM) or UEFI native (without CSM)
If there are boot problems then:
Booting to safe mode and a Windows 10 iso have additional recovery options.
https://www.tenforums.com/tutorials/2304-boot-into-safe-mode-windows-10-a.html
https://www.tenforums.com/tutorials/2376-create-bootable-usb-flash-drive-install-windows-10-a.html
https://www.tenforums.com/tutorials/9230-download-windows-10-iso-file.html
https://www.microsoft.com/en-us/software-download/windows10
https://www.tenforums.com/tutorials/5487-troubleshoot-windows-10-failure-boot-using-recovery-environment.html
https://www.tenforums.com/tutorials/27649-run-startup-repair-windows-10-a.html
https://www.tenforums.com/tutorials/4588-system-restore-windows-10-a.html
https://www.tenforums.com/tutorials/4090-refresh-windows-10-a.html
https://www.tenforums.com/tutorials/4130-reset-windows-10-a.html
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