Install wireless networking hardware and verify that the correct drivers are loaded?

so out of no where this problem occurs...i cant connect to wifi. my wifi switch is on and everything. then i descovered that the device manager doesnt recognize my wifi internal adaptor. so i reload the OS no luck. and i try getting softwere of the hp website and that didnt work. so i need your hlp before i throw my laptop across the room.plzzzzzzzzzzz help