Brentson

I have had some Trojan problems in the past, but I have gone far and beyond in my computer. Its speed has increased almost to its original state. However there is not anything else wrong with my computer. I have ran nine different Virus Scans from different providers. But they all detect nothing. So I decided to work on my registery. My computer got slightly faster, but not to were it needs to be. Also my restoration points were deleted so I cannot jump back to factory state. Do ya\"ll got any ideas what the problem could be?