After Win7 updates and installing the Nvidia adapter update, I can no longer use both displays. I have to disconnect the HDMI cable in order to see the logon screen. When Win7 boots up with both cables connected, it first starts out on the HDMI screen then switches over to the VGA connected cable and disables the HDMI port and shows me only the right side of the what would have been a dual display. This hides the logon screen. The mouse will transverse the visable screen and disappear on the left to what would have been the left display.. I have to shut down, disconnect the HDMI cable and reboot using only the VGA side. then Win7 works ok. The Nvidia 8500 update seems to have problems. How can I uninstall that update so both displays will work as it did in the original install??