To Stop About:blank Re-infecting

Liquidarc

After clearing about:blank home-page, by using Bidefender solution, the virus can come back at a later date. After some weeks/months it has come back.

What have I failed to do or what do I need to do to stop it coming back?

I am running:-

Internet Explorer 11

Windows 8.1

Toshiba Satellite 64 bit

Bitddefender Internet Security 2013

Rohugh

The "about:blank" homepage happens when Bitdefender finds and disinfects an infection.

More details from Georgia - http://forum.bitdefender.com/index.php?s=&...st&p=210418