Notebook not working on Windows 11/Atlas OS

Notebook not working on Windows 11/Atlas OS

Hello,

I jave bought gamer laptop in used condition to make  some AI application.
I installed Atlas OS to improved performanceds and it is working very well.
I have Avast Secutiy as firewall. The whole system is really fast and all my apps work well....but Notebook!
I installed the app, logged in but then I have the small square turning on forever. No note and no interface appears.
What shall I do ?