I can't connect my laptop to my Wi-Fi?

I was watching YouTube videos and it stopped loading so I disconnected my Wi-Fi. When I tried to connect it again it wouldn't connect. So, I pressed forget this network. Then, when I tried to connect it again the network disappeared completely. I don't even have the option to connect to it. And I'm connected on my iPhone right now, so it's not the Wi-Fi that isn't working. I also tried restarting the router and it didn't work. Can anybody help?

Restart the computer first. Then try.

Restart the laptop and try again.
http://www.bing.com/...7BCD6B1FBD

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