Wifi automatically turns off

Hi Apple,

Once in a while my network does not work, when I am doing something, somehow my network doesn't work anymore. So I have to go into System Preferences > Network > Turn off the network > Turn it back on, then it would work again. I don't understand how, it turns off like every 10 minutes, could you please help me. Also, I am unable to go to the Genius Bar, so maybe I could use the live chat.

Thanks,