Specs in sig, currently running 175.16 no problems. Uninstall drivers, boot into safe mode, install these . . . reboot into windows I hear the vista ( 64 ) start up sound and no screen. Go back into safe mode, uninstall, reboot into regular windows, it installs as standard VGA. Try to reinstall in regular windows, reboot same blank screen but windows booting up. Back into safe mode, uninstall, reboot to regular and install 176.16, restart, all is well. No good performance for me I guess.