I had a virus in my PC, due towhich I was not able to open google and gmail, even when I tried to use google chrome the browser used to shut down automatically with a message "Google is banned".This was something surprising and initially I could not trace , why the system is behaving in such a manner.
I had Symantec End point protection installed in my machine -which is considered to be on eof the most efficent and up-to-date antivirus available.However, no virus was detected and hence I was totally confused.I also tried AVG trial version, but even it failed.It was when I called my hardware person-he suggested Net Protector.The trial version itself detected the virus and the malware.We bought the license immediately and everything is now working fine.Moreover, the cost alsois very nominal around 600 Rs with one year validity.