This blog entry will show you the way to install Wireless Adapter Driver in Windows to utilise the maximum feature possible.
1)After you reformated the Harddisk and clean installed Windows, do not be in a hurry to install the Wireless Adapter Driver's "Setup.exe". If you execute Setup.exe immediately before Windows has the chance to detect it and install the Windows Driver from Microsoft Updates, the virtual miniport adapter will not be pushed into the system.
By defaults Windows will autodetect the Wireless Adapter just go into Device Manager and Click "Detect Hardware"
This is because if you follow this method Windows will create a Virtual Device WiFi Miniport Adapter.
It is a new Windows 7 feature that allows your laptop to act as a Wireless Access Point (AP).
It will create a New Virtual Adapter Connection as shown below.
Do a search in Regedit.exe and remove it if you find it irritating.
After that to update the Device Driver to the latest version do the following:
Extract the Latest Wireless Adapter Driver to a location.
Make sure the inf file exist.
Update the driver through device manager.
Point the update location to the driver location.