My lenevo thinkpad c13 yoga's backlight is not working

i used this chromebook and the keyboard backlight was working perfectly but when i reinstalled windows and even the crosec service , the backlight is not working.
it was working before the new fresh windows installation but after the installation it stopped working.

is there anything i can do?

There isn’t a guarantee on anything with this patch. Either go to coolstar.org and search the driver or go to your CPU’s page (if you don’t know go to Device Manager)

I’m C13 yoga too and my keyboard backlight doesn’t work after I reinstall windows. I don’t know how to solve it. Anything on coolstar.org didn’t work and I can’t find the website I used to found the working driver. I found it on a forum, about computer and program, It’s hard to get it back.

emm, I installed a driver called AMD virtual bottun, and it seems to slove my problem. The same methond mentioned by

Hi, on Asus chromebook cx3401 with windows 11, the blacklight works, but i can^t get usb-c working.