I have been using the Edimax 7128 wireless card for about six months on a Vista operating system when it suddenly stopped working. I had not added any hardware or any major software recently. I have tried other network cards and they haven't worked as well.
I have tried and gotten the card to work on other systems. I can get internet from an Ethernet cable (although doing so involved moving the computer to a different room in my house. I have also reloaded Vista, reloaded the driver more times then I can count, reinstalled the card and the computer won't even recognize it. I am using a Biostar N4SLI motherboard.