Macbook pro Wifi/Ethernet issue

Hello,

Today I got a real prolem with my internet connection, when I wanted to connect to my internet, it didn't work with wifi and with wire internet also.

And don't why, because yesterday it worked well.

Btw all my other devices(pc, iphone ..) works with internet just my mac...

I tried a lot of solutions but no one works, like deleting files in the system configuration folder and adding a new wifi ...

I downloaded the lastes update for my macos sierra and installed it but nothings happen.

Can someone help me please ;)

最后更新：2017-08-26 00:43:59