Surface Laptop keyboard problem

Hi,

 I need help for Surface Laptop (7th generation) keyboard issue.

We just received a brand new Surface Laptop (2036 model) from our supplier in France.

At the first start, i choose, in win11 wizard, the "French (Traditionnal, AZERTY)" Keyboard.

The end of wizard and installation went smoothly

But the problem is that when I press certain keys, the caracter that is displayed is wrong.

From A to Z keys it's ok. But some others are wrong. Ex :

• "!" shows "_",
• Alt-Gr @ displays tild (~),
• key "-" "_" displays ")" or "°" (with maj associate).

I check the language, region, keyboard parameters, I see nothing inconsistent.

I've download the Surface Laptop 7 update 26.033.32430.0 msi and installed it. Nothing changed.

I've deleted the 4 keybords in device manager and reboot the Surface. Still the same problem.

I did a factory reset. At the first start, i choose this time the "French (Standard, AZERTY)" keyboard.

Not better... I've download The Surface Diagnostic Tool, but it doesn't help me.

We installed 4 other Surface laptops a few months ago, and we haven't encountered any problems (with the same keyboard).

Does anyone have any idea what the cause of this problem might be? Hardware ? 

Thanks a lot for help.

Jean-Alain