Hi OussemaDhaouadi,
Thank you for reaching out to Microsoft Community.
I'm sorry to hear about the issue you re having on your Surface Book 2. Please try to run these steps first on your Surface then observe if still the issue persist:
1: Run Surface Diagnostic Toolkit and check Windows Update
2: Update drivers and firmware
Check what is the current OS Build of your Windows version by going to Settings > System > About.
Go to Download driver and firmware for Surface, choose Surface Book 2 then click Download on the next page.
Choose the .msi file that matches your current OS Build and click Next.
After downloading, run and install the .msi then Restart.
If still the issue persist, I suggest that you contact support through our Global Customer Service phone numbers to check for replacement options available for your Surface Book 2.
If this answer your question, we highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you. Otherwise, don't hesitate to update us so we can further assist you.
Kind Regards,
Marrion Y.