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for those with the same problem, i've find the solution :
-downoaded the intel chipset file on the packard bell website.
-delete the generic cardd on the devices management
-refresh thee list of devices
-it will find a "vga card" with a yellow problem exclamation point
-after few seconds : black screen, then magic : the intel hd graphics is working good !
hope it can help ...
I am happy to hear you found the solution.