RE: 5521 No wireless network available
I have exactly the same problem with exactly the same laptop. Wifi has worked fine for a year and a half. All of a sudden it's as if there is no wifi card installed in the laptop. I didn't change anything. At one point after going away, it mysteriously re-appeared. Now a few days later it disappeared again. I'm not saying that the wifi adapter can't connect, it's as if there is no wifi adapter hardware in the laptop anymore. I couldn't find the wifi adapter in device manager. I'm going to look again tomorrow but if I still can't find a wifi adapter or unknown device I'm thinking of opening up the laptop to see if the wifi card has come loose.