Earlier today, I noticed that there was a strange process running, in my task manager. It kept blinking, and was impossible to end. According to one of my friends, this is a virus which is incredibly hard to get rid of. He told me to use a program called "WinOptimizer" but that could not delete the file, each time I tried it said the file was being used by another application. As a last resort, I tried to use the system restore program, but it wouldn't let me saying "System Restore has been turned off by group policy. To turn of system restore contact domain admin.

 

What should I do? The virus file's name was "winiogon.exe"