1. search and download the driver
http://www.nvidia.cn/Download/
2. vim /etc/modprobe.d/blacklist.conf
appendthis lines to the file
blacklist vga16fb blacklist nouveau blacklist rivafb blacklist rivatv blacklist nvdiafb
3. Ctrl+Alt+F1
sudo service lightdm stop
sudo sh NVIDA-*.run
sudo service lightdm start
cat /proc/driver/nvidia/version
