How to install Driver Dell XPS 12 9250: • A check advance is not installed hardware drivers with how to enter start >right click Computer >>window appears select properties system >select device manager. • Note whether there is a driver not installed hadware? If there is please enter your driver CD in your computer or laptop DVD Room, e. Amd Radeon Hd 7800 Driver Windows 10. g. VGA card or LAN Card has not been installed or please you download in advance be linked below. • Look for the VGA/LAN Card folder on Your CD driver through windows explorer or extract the first file you downloaded. • Look for a file with the name Setup • Double-click the file, follow the next steps with the next and click next until the installation process occurs. • After completion of the computer or laptop usually ask for restart, restart the course.