Umm...by runing over and over again...seems to me, it's a service that's running at startup, not an actual virus.
go to Start>Run and type msconfig and press ok. Go to startup tab and uncheck the service that's bugging you.Restart.
If it really IS a virus, then run Malwarebytes (google it , download, install and give it a scan)
And how come you don't have an antivirus? (there are some antiviruses that gives trial. Try Kaspeski or Avast) Try scaning with one of those if Malwarebytes isn't enough...