Wireless internet not working

I purchased a laptop about 2 years ago and ive recently started having problems with the wireless internet…whenever i go on the “connect to network” function nothing i expect appears, infact i get no functioning networks…a few months ago i used to be able to do that and connect to our network at home and now it doesnt even appear…its the same whenever i go…The wired connection works perfectly fine so im not sure what the problem is…
please help

thanks