Note: In order to install the scanner in Windows Vista or Windows 7, you need to disconnect the scanner from the back of the computer's USB cable. Next install the driver and reboot your computer. Once your computer has rebooted connect the scanner to the back of the computer's USB connector. Also you need to check if the scanner is being detected without a yellow exclamation in the device manager. If a yellow exclamation is in device manager, remove the scanner from the device manger and reboot the computer.