Looks like there's something wrong with the router. Do other devices (like your smartphone and tablet) connect with it?
This CQ50, originally a Win7 machine, was upgraded to Windows 10. It worked fine for years. For about a month now, it will not recognize my router (supplied by Comcast). However, it recognizes any other nearby router and allows me to connect if if have the password. So, I replaced the WLAN card and got a USB wireless card. No luck. What should I look at next?