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.)
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).
Perform a clean install Windows 10:
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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