I had recently run combofix.exe file on my system. I am facing some trojan virus issue. I am not getting proper solution to get rid of this. After installing Combofix when I rebooted my laptop and clicked on the icon it popped out a error saying Cannot find C:\Combofix\hidec.exe on Startup. I am facing the same issue in some applications. It looks like there is some serious trojan virus in the system.