You will need to give us a lot more information. What wireless card/solution are we talking about? What platform is this card/solution installed in?
If this is a desktop design, please describe it. What motherboard? What processor? What memory? Please provide true part numbers wherever possible.
If this is a laptop design, please provide its full product id. Is it the original wireless card or is it a replacement? If it is a replacement, have you verified with the manufacturer that the replacement card is supported by the platform? Note also the following: Regulatory Information Regarding Wireless Hardware Installation or Upgrade and Why Doesn't My Laptop Recognize My New Intel Wireless Adapter?