Welcome
Ok let’s start with the basics, I assume you have a laptop under 5 yrs old.
First, check it is not hard blocked… [check the wi-fi switch or key combination is on]
if it is on
whilst the laptop is on [make sure you have saved all work] and hold the power switch down [turn off] and keep holding it for 60 seconds, then switch on and re-boot
if the above both fail then please post the result of inxi -n back on this page and I will have another look