To uninstall the NVIDIA Display Driver software, follow these steps:
Note: It is highly recommended that you follow the steps in this section to  
             completely uninstall the NVIDIA Display Driver software before  
             installing a new version of the software.
Step1
From the Windows taskbar, click Start > Settings > Control Panel to open 
the Control Panel windows.
Step2
Double click the Add/Remove Programs item.
Step3
Click the NVIDIA Windows Display Drivers item from the list.
Step4
Click Change/Remove.
Step5
Click  Yes to continue.
Before Driver Installation
Step6
Restart your system.
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