Wireless devices not installing

Hi

I have tried two different wireless N devices with my desktop pc, but neither of them will connect.

The first was a Belkin USB wireless N adapter. I tried two of these and the same thing happened. The device was recognised by the pc and I installed the latest driver. After rebooting the pc the adapter was recognised but it said it wasn't connected to the computer.

Then I got a PCI-e x1 wireless adapter - Asus PCE-N10. This was detected and installed with the latest driver, but again it shows that it isn't connected to the computer.

Both times, the computer detected the device before it was installed.

I am currently using a linksys wireless G usb adapter but it's old and slow.

My PC is a HP s5202uk. Please help! I'm going mad!

No. I didnt want to risk losing connectivity, but Ill give it a go now.

I deleted both devices and drivers. Then re-booted and installed the asus utility and driver. Then I shut down, installed the card and then powered up. The card was detected and the driver installed again. But again the utility and the adapter settings windo both say that the card is not connected. I am just re-booting to see if there is any change.

In network connections and the taskbar.

Not yet. I was trying to use the asus utility software, but it wont communicate with the card - it's saying its not there. If it's a software problem, how can I configure it?

Card is there, no warnings and working properly. In the task bar the icon is the wireless one with a red x through it. There aren't any wireless networks available in the window. The router is on and working and the pc is about 7 metres away (through the wall).