This is the virus problem. Please install the Symantec AV with latest virus definition and run full scanning. Your problem will be resolved after the complete scanning.
If you have not a Symantec AV.
Download the Nortan Security Scan tool on following link
ftp://ftp.symantec.com/misc/tools/nss/
and click download the NortanSecurityScan.exe.
Extract the NortanSecurityScan.exe.
Then Go to http://www.symantec.com/security_response/definitions/download/detail.jsp?gid=savce
Download the first FTP file under the Client installations on Windows Platforms (32-bit) .
Extract the downloaded FTP files then open the extrected folder.
Then Extrect the VirusScan folder and rename the extrected VirusScan folder to Virusdef.
Copy the Virusdef folder and open the NortanSecurityScan folder
Then paste the Virusdef folder inside the SymSupport folder.
Copy the SymSupport folder and paste on infected machine.
If your machine is running in safe mode.
Then open your machine on safe mode and run SymSupport (nss.exe) tool and run full system scanning.
If your machine is not running in Safe mode.
Then open your machine on Normal Mode and run SymSupport (nss.exe) tool and run full system scanning.
Your problem will be reslove
Baljeet Singh