RE: 5521 No wireless network available
I wanted to follow up to let people know what I did to fix this issue. Since the wifi adapter itself was disappearing, I figured it was loose or defective. So I found a replacement wifi card on Amazon and installed it in the laptop. I should warn people that it was a big effort to get the laptop open so it could be replaced. I had to remove almost everything before I got access to the wifi card slot. I followed instructions in the online users manual on how to disassemble it. The card didn't appear to be loose, so I replaced it with the new one and it's been working perfect ever since. So I believe my wifi card died.