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#71
Go to the Dell Support Downloads website, input your Tag number from the bottom of laptop, download the Wireless driver and rightclick to Extract it to your backup so you have it handy to install if Win7 starts up without the wireless driver.
Another method: Driver Install - Device Manager
Once you install the driver, click the Connection icon in the bottom right system tray to connect to your network.
If during install it asks for your network information then it already has the wireless driver and will be ready to connect to your network when it starts up.