I am using Windows Vista operating system and my browser is Opera 10. I need someone to provide some help to delete Win32:Hupigon-ONX. I am using Avast antivirus, but it has not been able to get rid of the same. I am not able to understand why it is not able to delete it, even after detection. Kindly help me with suitable solutions to delete this infection from my system. My system has become very slow after this infection has entered my system.