After trying under multiple admin accounts I still cannot get any AV program to work. They install fine but as soon as they start all AV programs throw an error indicated that it's respective service couldn't be started.
I've run just about every vendor specific av removal tool know to man, clean the reg, renamed the repository, used trendmicro house call, malwarebytes and no sign of an infection.
I have also noticed that Mozy (a backup program) will not run properly now and logmein which also has an underlying service seems to be malfunctioning.
So, I'm trying to get an av program to stick but nothing will work so far as they all result in the same service could not start error. Even the bloaty microsoft security av apps throw the same error. How should I approach this to repair it without re-installing XP?