When I shut down or log out my system freezes and I have to hold down the power button

When I shut down or log out my system freezes and I have to hold down the power button:

I use Ubuntu 16.04 . I’m new to Linux. When I shut down or log out my system freezes and I have to hold down the power button. How can I fix that? i have dual system windows 10 and ubuntu 16.04 my hardware i7 7400u ram 16gb the problem start the first time i install ubuntu like this : http://ift.tt/2wRSdMV

please help me i am new in this things

submitted by /u/iihidanii
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