Wireless card detected but cant see or connect to any networks

Hi guys.

I have a problem with my desktop PC where the wireless card is detected but will not show any networks in range when there are several including my home network. I already replaced my wireless card as the last one wasn't showing at all on device manager and was a bit dated anyway. The new card shows on device manager but when I clock the icon in toolbar it just says no connections are available.

Does anyone have any suggestions before I go ahead and reinstall windows, which I'd prefer to avoid.

Thanks

Tony