Laptop won’t connect to internet

You sure there isn't a button on the key board? Usually at the top that you have to push a function key at the same time.

Would need a model and pic would help

Couple of things could be at play. Have you tried disabling/re-enabling the network card? Rebooted? It’s quite possible there is a hardware switch like others have suggested that disabled all wireless radios, think airplane mode on your phone. Sometimes this is a switch or sometimes it’s a keyboard function...

Low power mode could disconnect wifi. Try plugging it in, reboot it and then look for wifi