Notebook Video, Display and Touch

Hello,

on my laptop x360-14-dh1006nf, Laptop Keyboard and touchpad was working since long time and recently both didn't work in windows 11,

but keyboard work in Bios and external keyboard work in windows

Please notice : I have the same issue when I'm starting in safe mode

So I need to use the virtual keyboard on the sensitive screen or external keyboard to be able to login

I have try several action but it has not fix :

- disable tablet mode / enable tablet mode

- remove all keyboard drivers (active + hidden in device panel) and restart

Some information strange that can help to understand :

- when I select / unselect the "mute" button on my external keyboard, the light is OK on the laptop keyboard

- but when I select / unselect the "caps lock" button on my external keyboard, there is NO light on the laptop keyboard

I have all the drivers up to date and I didn't identifed to have install recently a driver that should be the root cause of this issue.

Another Information, Since several month before the issue, my touchpad was failing and was seen with warning flag in device panel, the solution was to disable and enable the device in device panel and it was working again.

I have check and the 

So what is the issue ? 

I was thinking it is hardware issue, but keyboard light work for mute button and keyboard working in Bios and this is strange to have Keyboard + touchpad impacted in the same time.

I was expecting to reinstall windows but don't think it will fix issue because I have the same issue on safe mode

Can you please help me ? 

Thanks in advance for help