If the manual indicates a motherboard jumper setting to disable onboard video make the appropriate change. (Settings vary from board to board so carefully read the motherboard manual.) If there is a setting to disable onboard video use it. Change the setting for video memory allocated to disabled or the minimum amount possible, whatever the settings available may be for your motherboard. Close up, reconnect the power cord and press the 'On' switch. * Ensure that the monitor is connected to the new card, and that the monitor is turned on and warmed up. Locate any entries there for display drivers and choose Remove for any that appear. * In Control Panel choose Add/Remove programs.
OK out of there and DO NOT REBOOT if asked. Locate the entry for the display card, right click it and choose 'Uninstall' or 'Remove' or whatever it is.
On the Hardware tab choose Device Manager. * Right-click My computer and choose properties.
