The major difference is scans is that a boot scan does an extremely deep scan while a full scan is not so deep.
I have, and many other forum members, found that the default quick and full scans are sufficient.
In fact we have one forum member who relies solely on a default quick scan once a week.

But, if you still feel you may be infected follow the instructions here.
And start a thread in the viruses and worms child board. Please be patient and one of our malware experts will assist you. :slight_smile: