Maybe i have resolved the problem, because i have done the Mini enduro without problem
This is what i have done:
-Boot into normal mode.
-Uninstall your current nVidia Display Drivers.
-Restart the PC, this time booting into Safe Mode.
-Once in Safe Mode, run Driver Sweeper (google it, quick and easy program to download), and do analyse and clean only for "Nvidia display driver"
-After Driver Sweeper has finished its process, restart again.
-Boot into normal mode.
-Install this driver
XTreme-G 180.42 Vista 64bit and restart one last time, again booting into normal mode
PS: in the control panel of the video card, i have also disable the PhysX gpu acceleration.
If you haven't Vista 64 you can find this 180.42 driver for others op on this site
http://www.tweakforce.com/
into the download section.
I hope it can help you!