the virus I got rid of is back only this time I've had a few more, something keeps turning the Automatic updates off and my firewall, I keep moving the viruses to the chest but I restart the computer its there again I've done a boot scan but no matter what I do the Bastards are there again, I've sent Avast a hijackthis log file I'm just waiting to see what they say, I've had Avast about 4 years never had problem before, should I do reinstall of windows surerly that would put it right?