03-15-2012 12:28 AM - edited 03-15-2012 12:31 AM
It is not in device manager
Not as a Network controller with a yellow question mark?
Not listed under "network devices" after expanding this entry in the device manager?
Please check, whether the chipset driver is installed. This driver is the basic driver, which makes possible, that all devices can be found.
Lenovo only offers a Cisco wireless driver in the download-area, but i guess, there were more drivers in earlier days.
Please first identify the wireless card (open the cover on the bottom side) and post the FRU number(s) resp. the brand an model from its label.