I recently got my computer back from being fixed and while it was away i used the virus with my windows 7 64 bit laptop and i updated to the latest 4.5.3.00 but i now want to change it back to the 32bit version for my desktop comp. How do i roll back drivers or whatever i need to do to get it back to 32bit. When i try to do this i uninstalled the os update but when i restart the comp after installation it tells me the no virus ti was found. What do i do? Please dont say open a ticket because i have done four days waiting for them to reply. Thanks