My Internet went out and at first I thought it was the snowstorm we had but my phones and such were still connecting. Then it stopped attempting to connect all together and now I can't even find my home router on the laptop even though my other devices are fine.
Re install your wlan drivers for your laptop. Also try directly connecting the Ethernet to the modem and if that doesn't work then try tethering your phone with USB. If none of these work then reinstall your drivers.
Laptop takes a lot longer to connect, be patient
That happens to me sometimes too. I just turn the modem off then back on and unplug the router and plug it back in. That usually corrects the problem for me.
restart modem/wifi router! see if that works!