Hi kamele69,
It is unfortunate that you are unable to connect to internet. Request you to you uninstall/ reinstall network drivers by following the below steps:
(1) Move to the top right corner of the home screen and click on search.
(2) Now type device manager in the search box, select settings and hit enter.
(3) Detect Intel Centrino drivers, right click and uninstall it.
(4) Now you may use the below link and install network drivers:
If you have any other questions do reply to the same thread.