I have a Windows 2000 machine. I purchased a USB2.0 Adapter Card that slides into the side of the laptop. Lately, a window popup will appear saying the adapter has been removed improperly and then I would have to restart the computer for the laptop to recognize that it is plugged in. I tried looking at the hardware screen when it is attached and it says the device is functioning normally. The Card seems to fit securely into the side of the laptop. Any help would be appreciated.