Why won't my laptop connect to the wifi after Windows 10 was dowloaded?

[Windows Central Question]

my laptop won't connect to the wifi after windows 10 was dowloaded

I can't get on to the internet on my laptop , it won't connect to the wifi after I have downloaded windows 10 , if there something I need to do . the wifi is working fine! my whole family can get on wifi on our phones. need help!