Try removing "splash" or adding "vga=0x31a" in /boot/grub/menu.lst in the line starting with "# defoptions=quiet splash", then do sudo update-grub and restart.
Taken from http://wiki.ubuntuusers.de/Nvidia_Grafikkarten
Try removing "splash" or adding "vga=0x31a" in /boot/grub/menu.lst in the line starting with "# defoptions=quiet splash", then do sudo update-grub and restart.
Taken from http:// wiki.ubuntuuser s.de/Nvidia_ Grafikkarten