Whats the spec of your machine? I will assume Windows.
Try rebooting your PC and loading it in safe mode (do this by pressing F8 when it boots up near the start). Then run the antivirus program. Doing this may stop the virus from running when you load up.
Secondly, when in Windows, press Ctrl+Alt+Del and have a look at the list of things running to see if anything suspicious is in there.
Failing this, and bearing in mind that you have tried the removal advice from the relevant website, a fresh install of Windows is a better solution.
Regards
Maz