Here I'm posting a very useful anti virus which will remove your all computer viruses after login before your windows services starts. Its really working with my personal experience.
RegRun Reanimator 5.6.929
2> Extract all files to one folder.
3> Double Click On Reanimator
4> Click On Scan for Viruses
5> Select Use Deep Level Scan and click Reboot
6> After Reboot it will scan your computer and ask you one bye one to delete suspicious files and precesses.