ComboFix is a malware tool...which should never be run by ordinary users, unless requested to do so by someone knowledgeable/experienced in the treatment of malware.
The following summarizes some info re ComboFix, I urge you to read it.
ComboFix usage, Questions, Help - Look here - http://www.bleepingcomputer.com/forums/topic273628.html
Is there any way that you can get your friend to post? That eliminates from being a middleman on a system that you cannot see nor operate...and trying to obtain info from others in the same situation. Which, IMO, lends itself to haphazard suggestions and misinformation.