Hello jiturajpattnaik and welcome to Seven Forums.
You'll probably get a better response if you post your question in the Crashes and Debugging section. Here's a link on the info you should provide: http://www.sevenforums.com/crashes-d...tructions.html
Due to time zone differences and how busy the BSOD experts are, it may take a while for an answer. In the meantime you culd try running a System File Checker scan from an elevated command prompt (option two, this tutorial) in case any system files have become damaged or corrupt. If problems are found run the scan 3 times rebooting in between each scan. SFC /SCANNOW Command - System File Checker