Hello there tusharchakra, welcome to the forums
What graphics card do you have? Have you installed the latest drivers for your graphics card, plus all updates for windows?
Secondly, if you are unsure as to if you have the latest drivers, or would prefer someone else check for you, you can post your system information on the forum so we can help.
To do this follow these steps...
1. Go to start, and click on 'Run'.
2. When the run box appears, type in 'dxdiag' into the box and click 'Ok'.
3. If a message appears click 'Yes' and a window will open giving you information about your computer.
4. To get a copy of your report click the button that says 'Save all information...'. Save the file to your desktop.
5. Attach this text file to your next post and we will be able to see information about your computer to help.
Regards,
Adam