So I've got my new PC running nicely, all graphics drivers installed etc. But, when I boot the PC, the antenna at the back has a green light until Windows starts up, then the light goes off, and Windows doesn't detect any wireless devices. I've had to use a Netgear USB WiFi adapter to get onto this website. I could just use that but that's not the point, I paid for the wireless card so I should be able to use it! Anyone know what's up with that?