Issue of controller Netowrk 3820 t

Hello!
I have problems with my Acer 3820 T. He is unable to detect network connections at all. He keeps receives an error message saying that my driver network controller has failed. Any suggestions on how can I fix?

Restart the computer.
During restart, press "F8".
Select Disable Driver Signature Enforcement in the start menu.

Tags: Acer

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