I installed a Ralink LB Link wireless N USB adapter on my windows 7 laptop and did not really like using the USB so I unplugged the USB, but when I did so, my internet connection disappeared. And my wifi search button turned into a cable box picture with a red X on it. I tried uninstalling the usb driver but my original wifi connection way won't return. And now I cannot use my internet at all unless the USB is plugged into my computer. I tried troubleshooting and all that I could to fix my computer, but I just don't know what I'm doing or how to fix it. Please tell me how can I get rid of the wireless N USB adapter drive from my laptop and get my original way to connect to the internet to return. Thank you.