Screen not working after Windows Update

Hi, I’ve only had my CHUWI Minibook x 2023 a week, but after a Windows (11) Update (I thought it was just a feature update, but maybe more - display drivers?) the screen is just blank.

I turn it on and the screen does nothing - I can see the little blue light on the side to suggest it’s on.
I can turn the keyboard backlight on/off.

Have tried to get into the BIOS, but no luck pressing Shift/del/any F keys.

Also tried attaching USB-C > HDMI screen, but again nothing.

Any ideas much appreciated!

some problem here,but external monitor works