I got a java update, and once it was done it asked me to restart my computer. It shut down and started up fine, but after it was completely started up it wouldn't connect to my wireless router. When I click "manage wireless networks," my router shows up. But if I go to the little icon on the task bar to connect to it it says no wireless networks are availabe. The windows diagnostics say that wireless capability is turned off. But there is no button or switch on my computer having to do with wifi. Does anyone know what I can do?