I don't know if it is a virus or not, but while I was trying to use Chrome on my ancient PC this error pops out of nowhere. I have searched this on internet and found it to be some antivirus but I do not remember installing any such programs.Please suggest what can I do to get rid of this problem.

You can check out this thread for further troubleshooting:http://www.beepthegeek.com/2011/09/savservice-exe.html