Wi-Fi won't show up as a connection option

I have had a Lenovo Z70 for a few months now and have had no problems with it until just now, less than 5 minutes ago it was connecting to Wi-Fi just fine, then I turned it off for a bit and I turned it back on and bam. Wi-Fi doesn't even show up as a connection option anymore. Please help, I don't know what to do
 
Close it down then restart and all may be well. F7 is your switch for airplane mode and if that has been turned on it shuts down the wireless card. The Z70 is a new model and well in warranty so you are eligible for free support from Lenovo. Have you checked that your network is OK? Sometimes if the internet goes down and there is a problem later with connecting I turn off everything, then working from the router back to the computer I turn on things one at a time leaving a few minutes between each one. That has worked well for me. If you are still stuck look in Device Manager and see if the wi-fi card is showing.
 
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