Hi, I've encountered a problem with a HP S5780uk desktop. The wireless adapter is showing no networks available, device manager reports it as working fine, I've disabled and enabled it several times, reinstalled the drivers, and temporarily turned off the firewall then disabled and enabled it again, with no success. The same computer has had a problem with norton 360 v5 for some time, it wouldn't open or do any scans, so I uninstalled it, again without the wireless problem being solved. I haven't noticed any obvious signs of a virus on the system. Another computer in the same location reports a number of wireless networks available, and connects to the ineternet wirelessly, so it's not the router that's the problem. I'm thinking the wireless adapter might have a hardware fault, but is there anything else that I could try? The adapter is from "Ralink Technology, Corp." and identifies itself as "802.11n Wireless LAN Card". I did a quick search for similar threads before posting, if I've missed anything then apologies in advance.