1 What operating system are you using? What Service Pack?
2 I would probably Install the drivers from the nvidia web site, not from the CD as they are not the latest ones.
3 Looks to me that you have a driver issue not a hardware issue. So if installing the drivers from nvidia doesn't work is probably quickest and easier to reinstall the operating system.
1. I am using Windows XP Pro SP3
2. I had tried latest one from Nvidia website, also the driver cam from CD and also tried the older version from downloading Nvidia website.
3. I even formatted my system and also done fresh install of XP after that installed intel chipset driver and then Nvidia driver but again the same issue is there.