There can be many expected but also unexpected problems with computer hardware and software.
It's best to make free backup images.
There is no method to move from a preinstalled Windows 11 to Windows 10 without performing a fresh installation of Windows 10 or restoring a backed up image.
The motherboard could have problems with Windows 10 that may be similar or dissimilar to Windows 11.
With a free backup image Windows 11 can be reinstalled in less than one hour.
These are some third party software for free and/or pay options for backup imaging software:
(Acronis, Aoemi, EaseUS, Macrium, Paragon, etc.)
https://www.tenforums.com/tutorials/61026-backup-restore-macrium-reflect.html
Manually backup all important files to another drive or the cloud.
Find a flash drive that you can format ( > or 8 GB).
Create a bootable Windows Media Creation Tool (MCT) (Windows 10 iso).
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
Perform a clean install Windows 10:
https://www.tenforums.com/tutorials/1950-clean-install-windows-10-a.html
Install drivers from the computer or motherboard or component manufacturer websites.
Consider making an additional backup image of the Windows 10 installation.
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