It sounds like you might want to check out the official driver thread “[Hi10 X] [Official Version] Chuwi Hi10 X Driver, Windows Tutorial Download ”
Within that thread, the first MediaFire link will lead you to a number of .rar files (parts 1 to 5). These can be used to create a ‘stock’/‘factory’ Windows 10 image by Chuwi (download them all, extract them, create a boot USB).
If you don’t know how to create a bootable USB (not via media creation tool), then you can read the second link in the official thread under the title “Tutorial”, which is just a word document explaining what to do (only difference is this tutorial is for the Chuwi Air, so you don’t need a usb hub, since the keyboard come with a usb port.)
Use that bootable USB to do a fresh install of Windows and you should, hopefully, be good to go.