No screens found

[Maddouri Haythem]

Hello
After un apdate for kali.2 (4.8.0), I can't log to my desktop, so  I boot
in the recovery mode and it's stop to the terminal.
I press X to go the graphical mode but I got an error: (EE) no screens
found.
I'm using Asus X550 L
my nvidia is Geforce 820M
please help me !!
thanks.
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