Beginner network failure

[nealite]

Hello everyone
I'm a little new here. I appeal to you because I inadvertently disable wifi and the network. I have therefore more no access to my avalon. What should I do to recover the access. I little not too much tinkering, I am a person with a physical disability. Do you know a software way to reset?

Thanks for your help.

[nealite]

Nobody can help me ?