hp laptop isn't showing any wifi networks at all

worth checking the WLAN AutoConfig service too. Win+R, services.msc, find it, make sure it's Running and set to Automatic. if that's stopped, the adapter shows fine in Device Manager but no networks ever appear. turning off fast startup has helped people as well, the card sometimes doesn't wake properly after a 'shutdown' that isn't really one.

check it's not just airplane mode or the wifi key. a lot of HP laptops have a key with an antenna icon in the top row that switches wifi off completely, and it's easy to hit by accident. if that's fine, open Device Manager > Network adapters. if the wireless adapter is listed, reinstall its driver (HP Support Assistant will find the right one) or do a Network reset from Settings > Network & internet > Advanced network settings. if the adapter isn't listed at all, Windows can't see the card, so try a full shutdown, check it's enabled in the BIOS, and after that it's hardware.