Step 1 :- Edit the file /etc/grub.conf
Step 2 :- To disable the nouveau driver in the kernel, add with a space rdblacklist=nouveau at last to the line beginning with the word kernel.
Step 3 :- Download the latest driver for your chipset from nvidia.com. We got ours at http://www.nvidia.co.in/object/linux-display-ia32-260.19.44-driver-in.html You can check first from Supported products tab of the link whether your product is supported by the driver we used for our desktop.
Step 4 :- After you have downloaded the file
NVIDIA-Linux-x86-260.19.44.run, change to the directory containing the downloaded file, and as the
rootuser run the executable:
# cd yourdirectory
# sh NVIDIA-Linux-x86-260.19.44.run
Step 5 :- After the installation, reboot the machine and hopefully the display will start functioning normally.