Sometimes, Viruses can annoy to the extent that they will not allow to boot the operating system and you are left in miserable condition. In such case, formatting and re-installing OS would be a non-profitable deal because you may lose your data if not backup and it will take a long time. Better Solution is to opt for running a Bootable Antivirus rescue disk to clean out any harmful objects present.
Quick Heal Total security is one of the most popular security suite (atleast In India) It gives your desktop needed protection from various Internet threats. It gives Internet Security by automatically removing viruses and spyware, fighting spam, blocking access to hackers, preventing access to unwanted and malicious websites and blocking pop-up banner advertisements.