Nagarajan
Post your problem in an independent topic so people can see it
Meanwhile try the following and post the result in another new topic
Go to this site
http://www.bulletproofsoft.com/download.html
Download
Spyware/Adware Remover 8.2.0.10
Once installed, open the folder
BPS Spyware Remover
Double click
Spyware Remover and choose
Continue Trial
Click
Check for Updates and update it.
Once finished reboot in safe made by clicking F8 on boot.
Open
BPS Spyware Remover
Double click
Spyware Remover and choose
Continue Trial
Click
Start Scanning
Once scan finishes, delete everything it finds.
Reboot your PC normally and see if the problem is solved.